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    356 vulnerabilities by X.org

    CVE-2026-56003 (GCVE-0-2026-56003)

    Vulnerability from nvd – Published: 2026-07-08 09:25 – Updated: 2026-07-08 12:06
    VLAI
    Title
    libXfont2 computeProps Property Buffer Heap Buffer Overflow
    Summary
    A heap buffer overflow due to missing size checking in the property buffer when parsing PCF files in libXfont2 ComputeScaledProperties() before libXfont2 before 2.0.8 could be used by attackers using authenticated X clients to execute code within the X server.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-122 - Heap-based buffer overflow
    Assigner
    Impacted products
    Vendor Product Version
    X.Org libXfont2 Affected: 0 , < 2.0.8 (rpm)
    Create a notification for this product.
    Date Public
    2026-07-08 09:22
    Credits
    Anonymous working with Trend Micro Zero Day Initiative
    Show details on NVD website

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    CVE-2026-56002 (GCVE-0-2026-56002)

    Vulnerability from nvd – Published: 2026-07-08 09:12 – Updated: 2026-07-08 12:07
    VLAI
    Title
    libXfont2 PCF Font Parsing Heap Buffer Overflow
    Summary
    A heap bufferflow in pcfReadFont() due to missing glyph bounds checking in libXfont2 before 2.0.8  allows attackers authenticated as X client to execute code within the X server.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-122 - Heap-based buffer overflow
    Assigner
    Impacted products
    Vendor Product Version
    X.Org libXfont2 Affected: 0 , < 2.0.8 (rpm)
    Create a notification for this product.
    Date Public
    2026-07-08 09:08
    Credits
    Anonymous working with Trend Micro Zero Day Initiative.
    Show details on NVD website

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    CVE-2026-56001 (GCVE-0-2026-56001)

    Vulnerability from nvd – Published: 2026-07-08 08:49 – Updated: 2026-07-08 12:08
    VLAI
    Title
    libXfont2 BitmapScaleBitmaps Integer Overflow Heap Buffer Overflow
    Summary
    A heap buffer overflow in BitmapScaleBitmaps in libXfont2 before 2.0.8 due to an overflowing 32bit size could be used by attackers able to access the X Server to execute code within the X server cont
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-122 - Heap-based buffer overflow
    Assigner
    Impacted products
    Vendor Product Version
    X.Org libXfont2 Affected: 0 , < 2.0.8 (rpm)
    Create a notification for this product.
    Date Public
    2026-07-08 08:15
    Credits
    Anonymous working with Trend Micro Zero Day Initiative.
    Show details on NVD website

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    CVE-2026-56000 (GCVE-0-2026-56000)

    Vulnerability from nvd – Published: 2026-07-08 07:36 – Updated: 2026-07-08 12:42
    VLAI
    Title
    xorg-x11-server / xwayland GLX contextTags Use-After-Free in CommonMakeCurrent()
    Summary
    Local attackers with a X connection able to provide GLX commit to the X server xorg-server before 21.2.24 and xwayland before 24.1.13 could cause a Heap Use After Free, due to CommonMakeCurrent() pointing into potentially reallocated memory.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    Impacted products
    Vendor Product Version
    X.Org xorg-x11-server Affected: 0 , < 21.1.24 (rpm)
    Create a notification for this product.
    X.Org xwayland Affected: 0 , < 24.1.13 (rpmver)
    Create a notification for this product.
    Date Public
    2026-07-08 07:30
    Credits
    Anonymous working with Trend Micro Zero Day Initiative.
    Show details on NVD website

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    CVE-2026-55999 (GCVE-0-2026-55999)

    Vulnerability from nvd – Published: 2026-07-08 08:07 – Updated: 2026-07-08 12:10
    VLAI
    Title
    xorg-server / xwayland glamor font atlas Heap Buffer Overflow
    Summary
    Local attackers with a X connection able to provide PCX fonts to the X server xorg-server before 21.2.24 and xwayland before 24.1.13 could cause a heap buffer overflow via SetFont due to missing glyph boundary checks.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-122 - Heap-based buffer overflow
    Assigner
    Impacted products
    Vendor Product Version
    X.Org xorg-server Affected: 0 , < 21.1.24 (rpm)
    Create a notification for this product.
    X.Org xwayland Affected: 0 , < 24.1.13 (rpm)
    Create a notification for this product.
    Date Public
    2026-07-08 07:51
    Credits
    Anonymous working with Trend Micro Zero Day Initiative.
    Show details on NVD website

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    CVE-2026-50264 (GCVE-0-2026-50264)

    Vulnerability from nvd – Published: 2026-06-05 10:36 – Updated: 2026-07-08 16:23
    VLAI
    Title
    Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: out-of-bounds heap write in dri2 drigetbuffers/drigetbufferswithformat
    Summary
    An out-of-bounds write flaw was found in the X.Org X server and Xwayland in DRIGetBuffers/DRIGetBuffersWithFormat. A client that requests multiple DRI2BufferBackLeft attachments and one DRI2BufferFrontLeft can trigger an out-of-bounds heap write. This may be used to crash the server, or for privilege escalation if the X server runs as root.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    URL Tags
    https://access.redhat.com/errata/RHSA-2026:26562 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26566 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26590 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26610 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26709 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:28923 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:29844 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36083 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36085 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36086 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36087 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36632 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36633 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36634 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36791 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36792 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/security/cve/CVE-2026-50264 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2485389 issue-trackingx_refsource_REDHAT
    https://gitlab.freedesktop.org/xorg/xserver/-/com…
    https://lists.x.org/archives/xorg-announce/2026-J…
    https://redhat.atlassian.net/browse/PSIRTSUPT-16950
    https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:1.20.4-35.el7_9 , < * (rpm)
        cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-10.el8_10 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.20.11-21.el9_2 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:21.1.3-10.el9_2.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:1.20.11-29.el9_4 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:22.1.9-8.el9_4.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:1.20.11-34.el9_6 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:23.2.7-6.el9_6.1 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux Server (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux Server Optional (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 8)     cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.2)     cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.4)     cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 9)     cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CRB (v. 8)     cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat CodeReady Linux Builder EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)     cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Date Public
    2026-06-02 00:00
    Credits
    This issue was discovered by Peter Hutterer (Red Hat).
    Show details on NVD website

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    CVE-2026-50263 (GCVE-0-2026-50263)

    Vulnerability from nvd – Published: 2026-06-05 10:36 – Updated: 2026-07-08 19:27
    VLAI
    Title
    Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free information disclosure in createsaverwindow()
    Summary
    A use-after-free flaw was found in the X.Org X server and Xwayland in CreateSaverWindow(). A client can trigger a use-after-free read after changing window attributes and forcing the screen saver, leading to information disclosure.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    URL Tags
    https://access.redhat.com/errata/RHSA-2026:26562 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26566 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26590 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26610 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26709 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:28923 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:29844 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36083 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36085 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36086 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36087 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36632 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36633 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36634 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36768 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36791 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36792 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36798 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/security/cve/CVE-2026-50263 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2485388 issue-trackingx_refsource_REDHAT
    https://gitlab.freedesktop.org/xorg/xserver/-/com…
    https://lists.x.org/archives/xorg-announce/2026-J…
    https://redhat.atlassian.net/browse/PSIRTSUPT-16950
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support Unaffected: 0:24.1.5-6.el10_0.1 , < * (rpm)
        cpe:/o:redhat:enterprise_linux_eus:10.0
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:1.20.4-35.el7_9 , < * (rpm)
        cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-10.el8_10 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:1.20.11-19.el8_8 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:1.20.11-19.el8_8 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.20.11-21.el9_2 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:21.1.3-10.el9_2.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:1.20.11-29.el9_4 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:22.1.9-8.el9_4.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:1.20.11-34.el9_6 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:23.2.7-6.el9_6.1 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
    Create a notification for this product.
    Date Public
    2026-06-02 00:00
    Credits
    Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter.
    Show details on NVD website

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    CVE-2026-50262 (GCVE-0-2026-50262)

    Vulnerability from nvd – Published: 2026-06-05 10:36 – Updated: 2026-07-08 19:27
    VLAI
    Title
    Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: out-of-bounds read/write in glx changedrawableattributes
    Summary
    An out-of-bounds read flaw was found in the X.Org X server and Xwayland in __glXDisp_ChangeDrawableAttributes(). A wrong size validation check can read a client-controlled number of bytes, exceeding the request buffer, leading to information disclosure. A write path also exists but requires byte-swapped clients which is disabled by default.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    URL Tags
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    https://access.redhat.com/errata/RHSA-2026:26566 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26590 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26610 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26709 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:28923 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:29844 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36083 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36085 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36086 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36087 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36632 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36633 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36634 vendor-advisoryx_refsource_REDHAT
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    https://access.redhat.com/errata/RHSA-2026:36798 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/security/cve/CVE-2026-50262 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2485387 issue-trackingx_refsource_REDHAT
    https://gitlab.freedesktop.org/xorg/xserver/-/com…
    https://lists.x.org/archives/xorg-announce/2026-J…
    https://redhat.atlassian.net/browse/PSIRTSUPT-16950
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support Unaffected: 0:24.1.5-6.el10_0.1 , < * (rpm)
        cpe:/o:redhat:enterprise_linux_eus:10.0
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:1.20.4-35.el7_9 , < * (rpm)
        cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-10.el8_10 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:1.20.11-19.el8_8 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:1.20.11-19.el8_8 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.20.11-21.el9_2 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:21.1.3-10.el9_2.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:1.20.11-29.el9_4 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:22.1.9-8.el9_4.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:1.20.11-34.el9_6 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:23.2.7-6.el9_6.1 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
    Create a notification for this product.
    Date Public
    2026-06-02 00:00
    Credits
    Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter.
    Show details on NVD website

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    CVE-2026-50261 (GCVE-0-2026-50261)

    Vulnerability from nvd – Published: 2026-06-05 10:36 – Updated: 2026-07-08 16:23
    VLAI
    Title
    Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in syncchangecounter()
    Summary
    A use-after-free flaw was found in the X.Org X server and Xwayland in SyncChangeCounter(). A client that sets up multiple SyncCounters can trigger a use-after-free when destroying those counters via a second client connection while changing those counters. This may be used to crash the server, or for privilege escalation if the X server runs as root.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    URL Tags
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    https://access.redhat.com/errata/RHSA-2026:26566 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26590 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26610 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26709 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:28923 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:29844 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36083 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36085 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36086 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36087 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36632 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36633 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36634 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36791 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36792 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/security/cve/CVE-2026-50261 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2485386 issue-trackingx_refsource_REDHAT
    https://gitlab.freedesktop.org/xorg/xserver/-/com…
    https://lists.x.org/archives/xorg-announce/2026-J…
    https://redhat.atlassian.net/browse/PSIRTSUPT-16950
    https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:1.20.4-35.el7_9 , < * (rpm)
        cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-10.el8_10 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
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    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
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    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.20.11-21.el9_2 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
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    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:21.1.3-10.el9_2.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
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    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:1.20.11-29.el9_4 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
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    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:22.1.9-8.el9_4.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
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    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:1.20.11-34.el9_6 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
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    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:23.2.7-6.el9_6.1 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
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    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
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    Red Hat Red Hat Enterprise Linux Server (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
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    Red Hat Red Hat Enterprise Linux Server Optional (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
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    Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
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    Red Hat Red Hat Enterprise Linux AppStream (v. 8)     cpe:/a:redhat:enterprise_linux:8::appstream
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    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.2)     cpe:/a:redhat:rhel_e4s:9.2::appstream
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    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.4)     cpe:/a:redhat:rhel_e4s:9.4::appstream
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    Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::appstream
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    Red Hat Red Hat Enterprise Linux AppStream (v. 9)     cpe:/a:redhat:enterprise_linux:9::appstream
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    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
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    Red Hat Red Hat Enterprise Linux CRB (v. 8)     cpe:/a:redhat:enterprise_linux:8::crb
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    Red Hat Red Hat CodeReady Linux Builder EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::crb
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    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)     cpe:/a:redhat:enterprise_linux:9::crb
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    Date Public
    2026-06-02 00:00
    Credits
    Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter.
    Show details on NVD website

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    CVE-2026-50260 (GCVE-0-2026-50260)

    Vulnerability from nvd – Published: 2026-06-05 10:36 – Updated: 2026-07-08 16:23
    VLAI
    Title
    Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in freecounter()
    Summary
    A use-after-free flaw was found in the X.Org X server and Xwayland in FreeCounter(). A client that sets up multiple SyncCounters and awaits on those triggers can trigger a use-after-free when destroying those counters via a second client connection. This may be used to crash the server, or for privilege escalation if the X server runs as root.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    URL Tags
    https://access.redhat.com/errata/RHSA-2026:26562 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26566 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26590 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26610 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26709 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:28923 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:29844 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36083 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36085 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36086 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36087 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36632 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36633 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36634 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36791 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36792 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/security/cve/CVE-2026-50260 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2485385 issue-trackingx_refsource_REDHAT
    https://gitlab.freedesktop.org/xorg/xserver/-/com…
    https://lists.x.org/archives/xorg-announce/2026-J…
    https://redhat.atlassian.net/browse/PSIRTSUPT-16950
    https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:1.20.4-35.el7_9 , < * (rpm)
        cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-10.el8_10 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.20.11-21.el9_2 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:21.1.3-10.el9_2.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:1.20.11-29.el9_4 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:22.1.9-8.el9_4.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:1.20.11-34.el9_6 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:23.2.7-6.el9_6.1 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux Server (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux Server Optional (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 8)     cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.2)     cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.4)     cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 9)     cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CRB (v. 8)     cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat CodeReady Linux Builder EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)     cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Date Public
    2026-06-02 00:00
    Credits
    Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter.
    Show details on NVD website

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    CVE-2026-50259 (GCVE-0-2026-50259)

    Vulnerability from nvd – Published: 2026-06-05 10:31 – Updated: 2026-07-08 16:23
    VLAI
    Title
    Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in xkb setmap request via mapwidths indexing
    Summary
    A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. _XkbSetMapChecks() declares a fixed-size stack buffer mapWidths[256] indexed by key type index. The helper function CheckKeyTypes() writes to this buffer at a client-controlled offset, allowing a stack buffer overflow. This may be used to crash the server, or for privilege escalation if the X server runs as root.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-121 - Stack-based Buffer Overflow
    Assigner
    References
    URL Tags
    https://access.redhat.com/errata/RHSA-2026:26562 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26566 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26590 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26610 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26709 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:28923 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:29844 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36083 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36085 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36086 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36087 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36632 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36633 vendor-advisoryx_refsource_REDHAT
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    https://access.redhat.com/security/cve/CVE-2026-50259 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2485384 issue-trackingx_refsource_REDHAT
    https://gitlab.freedesktop.org/xorg/xserver/-/com…
    https://lists.x.org/archives/xorg-announce/2026-J…
    https://redhat.atlassian.net/browse/PSIRTSUPT-16950
    https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:1.20.4-35.el7_9 , < * (rpm)
        cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-10.el8_10 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.20.11-21.el9_2 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:21.1.3-10.el9_2.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:1.20.11-29.el9_4 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:22.1.9-8.el9_4.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:1.20.11-34.el9_6 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:23.2.7-6.el9_6.1 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux Server (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux Server Optional (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 8)     cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.2)     cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.4)     cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 9)     cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CRB (v. 8)     cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat CodeReady Linux Builder EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)     cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Date Public
    2026-06-02 00:00
    Credits
    Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter.
    Show details on NVD website

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          ],
          "title": "Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in xkb setmap request via mapwidths indexing",
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            "engine": "cvelib 1.8.0"
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        "cveId": "CVE-2026-50259",
        "datePublished": "2026-06-05T10:31:39.152Z",
        "dateReserved": "2026-06-04T14:55:24.011Z",
        "dateUpdated": "2026-07-08T16:23:25.306Z",
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    }

    CVE-2026-50258 (GCVE-0-2026-50258)

    Vulnerability from nvd – Published: 2026-06-05 10:31 – Updated: 2026-07-08 16:23
    VLAI
    Title
    Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in xkb key types due to unchecked shift levels
    Summary
    A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. The X server has multiple stack buffers sized XkbMaxShiftLevel * XkbNumKbdGroups but CheckKeyTypes() does not verify or clamp non-canonical key types to XkbMaxShiftLevel. A client can change key types to excessive shift levels and trigger stack overflows. This is caused by an incomplete fix of CVE-2025-26597. This may be used to crash the server, or for privilege escalation if the X server runs as root.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-121 - Stack-based Buffer Overflow
    Assigner
    References
    URL Tags
    https://access.redhat.com/errata/RHSA-2026:26562 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26566 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26590 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26610 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26709 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:28923 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:29844 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36083 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36085 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36086 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36087 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36632 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36633 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36634 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36791 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36792 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/security/cve/CVE-2026-50258 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2485383 issue-trackingx_refsource_REDHAT
    https://gitlab.freedesktop.org/xorg/xserver/-/com…
    https://lists.x.org/archives/xorg-announce/2026-J…
    https://redhat.atlassian.net/browse/PSIRTSUPT-16950
    https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:1.20.4-35.el7_9 , < * (rpm)
        cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-10.el8_10 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.20.11-21.el9_2 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:21.1.3-10.el9_2.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:1.20.11-29.el9_4 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:22.1.9-8.el9_4.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:1.20.11-34.el9_6 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:23.2.7-6.el9_6.1 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux Server (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux Server Optional (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 8)     cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.2)     cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.4)     cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 9)     cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CRB (v. 8)     cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat CodeReady Linux Builder EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)     cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Date Public
    2026-06-02 00:00
    Credits
    Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter.
    Show details on NVD website

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    CVE-2026-50257 (GCVE-0-2026-50257)

    Vulnerability from nvd – Published: 2026-06-05 10:31 – Updated: 2026-07-08 16:23
    VLAI
    Title
    Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in misyncdestroyfence()
    Summary
    A use-after-free flaw was found in the X.Org X server and Xwayland in miSyncDestroyFence(). A client that sets up multiple fence triggers can trigger a use-after-free function pointer call. An attacker would connect to the X server to set up a fence and await that fence, then a second X connection destroys the fence, causing the use-after-free. This may be used to crash the server, or for privilege escalation if the X server runs as root.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    URL Tags
    https://access.redhat.com/errata/RHSA-2026:26562 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26566 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26590 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26610 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26709 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:28923 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:29844 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36083 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36085 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36086 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36087 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36632 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36633 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36634 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36791 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36792 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/security/cve/CVE-2026-50257 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2485382 issue-trackingx_refsource_REDHAT
    https://gitlab.freedesktop.org/xorg/xserver/-/com…
    https://lists.x.org/archives/xorg-announce/2026-J…
    https://redhat.atlassian.net/browse/PSIRTSUPT-16950
    https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:1.20.4-35.el7_9 , < * (rpm)
        cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-10.el8_10 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
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    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
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    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.20.11-21.el9_2 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
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    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:21.1.3-10.el9_2.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
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    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:1.20.11-29.el9_4 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
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    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:22.1.9-8.el9_4.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
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    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:1.20.11-34.el9_6 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
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    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:23.2.7-6.el9_6.1 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
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    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
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    Red Hat Red Hat Enterprise Linux Server (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
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    Red Hat Red Hat Enterprise Linux Server Optional (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
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    Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
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    Red Hat Red Hat Enterprise Linux AppStream (v. 8)     cpe:/a:redhat:enterprise_linux:8::appstream
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    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.2)     cpe:/a:redhat:rhel_e4s:9.2::appstream
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    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.4)     cpe:/a:redhat:rhel_e4s:9.4::appstream
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    Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::appstream
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    Red Hat Red Hat Enterprise Linux AppStream (v. 9)     cpe:/a:redhat:enterprise_linux:9::appstream
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    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
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    Red Hat Red Hat Enterprise Linux CRB (v. 8)     cpe:/a:redhat:enterprise_linux:8::crb
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    Red Hat Red Hat CodeReady Linux Builder EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::crb
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    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)     cpe:/a:redhat:enterprise_linux:9::crb
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    Date Public
    2026-06-02 00:00
    Credits
    Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter.
    Show details on NVD website

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    CVE-2026-50256 (GCVE-0-2026-50256)

    Vulnerability from nvd – Published: 2026-06-05 10:31 – Updated: 2026-07-08 16:23
    VLAI
    Title
    Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in font alias resolution due to libxfont2 name length mismatch
    Summary
    A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. A mismatch between the X server and the libXfont2 library's maximum font name length can cause a stack buffer overflow during font alias resolution. The server allocates a 256 byte stack buffer but libXfont2's alias target name length is 1024 bytes. A font alias name between 257 and 1023 bytes causes the X server to copy that name into the undersized stack buffer without further checks. This may be used to crash the server, or for privilege escalation if the X server runs as root.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-121 - Stack-based Buffer Overflow
    Assigner
    References
    URL Tags
    https://access.redhat.com/errata/RHSA-2026:26562 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26566 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26590 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26610 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26709 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:28923 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:29844 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36083 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36085 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36086 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36087 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36632 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36633 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36634 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36791 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36792 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/security/cve/CVE-2026-50256 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2485380 issue-trackingx_refsource_REDHAT
    https://gitlab.freedesktop.org/xorg/xserver/-/com…
    https://lists.x.org/archives/xorg-announce/2026-J…
    https://redhat.atlassian.net/browse/PSIRTSUPT-16950
    https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:1.20.4-35.el7_9 , < * (rpm)
        cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-10.el8_10 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.20.11-21.el9_2 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:21.1.3-10.el9_2.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:1.20.11-29.el9_4 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:22.1.9-8.el9_4.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:1.20.11-34.el9_6 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:23.2.7-6.el9_6.1 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux Server (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux Server Optional (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 8)     cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.2)     cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.4)     cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 9)     cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CRB (v. 8)     cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat CodeReady Linux Builder EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)     cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Date Public
    2026-06-02 00:00
    Credits
    Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter.
    Show details on NVD website

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              "packageName": "xorg-x11-server",
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              "cpes": [
                "cpe:/o:redhat:enterprise_linux:7"
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              "defaultStatus": "affected",
              "packageName": "tigervnc",
              "product": "Red Hat Enterprise Linux 7",
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          ],
          "credits": [
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              "value": "Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter."
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                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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                {
                  "cweId": "CWE-121",
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              "name": "RHSA-2026:26566",
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              "name": "RHSA-2026:26590",
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              "name": "RHSA-2026:26610",
              "tags": [
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                "x_refsource_REDHAT"
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            },
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              "name": "RHSA-2026:26709",
              "tags": [
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                "x_refsource_REDHAT"
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              "name": "RHSA-2026:28923",
              "tags": [
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                "x_refsource_REDHAT"
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              "url": "https://access.redhat.com/errata/RHSA-2026:28923"
            },
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              "name": "RHSA-2026:29844",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
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              "url": "https://access.redhat.com/errata/RHSA-2026:29844"
            },
            {
              "name": "RHSA-2026:36083",
              "tags": [
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              "name": "RHSA-2026:36085",
              "tags": [
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            },
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              "name": "RHSA-2026:36086",
              "tags": [
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                "x_refsource_REDHAT"
              ],
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            },
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              "name": "RHSA-2026:36087",
              "tags": [
                "vendor-advisory",
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              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:36087"
            },
            {
              "name": "RHSA-2026:36632",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:36632"
            },
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              "name": "RHSA-2026:36633",
              "tags": [
                "vendor-advisory",
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              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:36633"
            },
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              "name": "RHSA-2026:36634",
              "tags": [
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              "url": "https://access.redhat.com/errata/RHSA-2026:36634"
            },
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              "name": "RHSA-2026:36791",
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              "url": "https://access.redhat.com/errata/RHSA-2026:36791"
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              "name": "RHSA-2026:36792",
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              "url": "https://lists.x.org/archives/xorg-announce/2026-June/003702.html"
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              "time": "2026-05-15T03:14:46.000Z",
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            },
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              "lang": "en",
              "time": "2026-06-02T00:00:00.000Z",
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          ],
          "title": "Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in font alias resolution due to libxfont2 name length mismatch",
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        "assignerShortName": "redhat",
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        "dateReserved": "2026-06-04T14:55:24.011Z",
        "dateUpdated": "2026-07-08T16:23:20.521Z",
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      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }

    CVE-2026-34002 (GCVE-0-2026-34002)

    Vulnerability from nvd – Published: 2026-05-05 14:41 – Updated: 2026-06-08 03:30
    VLAI
    Title
    Xorg: xwayland: x.org x server: information disclosure or denial of service via out-of-bounds read in xkb modifier map handling
    Summary
    A flaw was found in the X.Org X server. This vulnerability, an out-of-bounds read, affects the XKB (X Keyboard Extension) modifier map handling. An attacker with access to the X11 server can exploit this by sending a malformed request, which causes the server to read beyond its intended memory boundaries. This can lead to the exposure of sensitive information or cause the server to crash, resulting in a denial of service.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-805 - Buffer Access with Incorrect Length Value
    Assigner
    References
    URL Tags
    https://access.redhat.com/errata/RHSA-2026:20547 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:20555 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:20557 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:20558 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:20560 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:20561 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:20562 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:20563 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:20575 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:20576 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:20590 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:21699 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:21712 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:21715 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:21716 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:21718 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:21741 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:21742 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:22424 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:22456 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:23254 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:23255 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:23496 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:24341 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/security/cve/CVE-2026-34002 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2451112 issue-trackingx_refsource_REDHAT
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support Unaffected: 0:24.1.5-6.el10_0 , < * (rpm)
        cpe:/o:redhat:enterprise_linux_eus:10.0
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION Unaffected: 0:1.1.0-25.el6_10.16 , < * (rpm)
        cpe:/o:redhat:rhel_els:6
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:1.20.4-34.el7_9 , < * (rpm)
        cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:1.8.0-36.el7_9.4 , < * (rpm)
        cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.20.10-4.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.11.0-8.el8_4.15 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.10-4.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.11.0-8.el8_4.15 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:21.1.3-2.el8_6.6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_e4s:8.6::appstream
        cpe:/a:redhat:rhel_tus:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.20.11-7.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_e4s:8.6::appstream
        cpe:/a:redhat:rhel_tus:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.12.0-6.el8_6.17 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:1.12.0-6.el8_6.17 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service Unaffected: 0:21.1.3-2.el8_6.6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_e4s:8.6::appstream
        cpe:/a:redhat:rhel_tus:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service Unaffected: 0:1.20.11-7.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_e4s:8.6::appstream
        cpe:/a:redhat:rhel_tus:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions Unaffected: 0:21.1.3-2.el8_6.6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_e4s:8.6::appstream
        cpe:/a:redhat:rhel_tus:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions Unaffected: 0:1.20.11-7.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_e4s:8.6::appstream
        cpe:/a:redhat:rhel_tus:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:21.1.3-13.el8_8 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:1.20.11-18.el8_8 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:1.12.0-15.el8_8.17 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:21.1.3-13.el8_8 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:1.20.11-18.el8_8 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:1.12.0-15.el8_8.17 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Unaffected: 0:21.1.3-5.el9_0 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.0::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Unaffected: 0:1.20.11-13.el9_0 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.0::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Unaffected: 0:1.11.0-22.el9_0.17 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.0::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:21.1.3-10.el9_2 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.20.11-20.el9_2 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.12.0-14.el9_2.14 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support Unaffected: 0:1.20.11-28.el9_4 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.4::appstream
        cpe:/a:redhat:rhel_eus:9.4::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support Unaffected: 0:22.1.9-8.el9_4 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support Unaffected: 0:1.13.1-8.el9_4.9 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:1.20.11-33.el9_6 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:23.2.7-6.el9_6 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:1.14.1-10.el9_6 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 10     cpe:/o:redhat:enterprise_linux:10
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
    Create a notification for this product.
    Date Public
    2026-05-05 14:01
    Credits
    Red Hat would like to thank Jan-Niklas Sohn (TrendAI Zero Day Initiative) for reporting this issue.
    Show details on NVD website

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              "product": "Red Hat Enterprise Linux 9",
              "vendor": "Red Hat"
            }
          ],
          "credits": [
            {
              "lang": "en",
              "value": "Red Hat would like to thank Jan-Niklas Sohn (TrendAI Zero Day Initiative) for reporting this issue."
            }
          ],
          "datePublic": "2026-05-05T14:01:46.686Z",
          "descriptions": [
            {
              "lang": "en",
              "value": "A flaw was found in the X.Org X server. This vulnerability, an out-of-bounds read, affects the XKB (X Keyboard Extension) modifier map handling. An attacker with access to the X11 server can exploit this by sending a malformed request, which causes the server to read beyond its intended memory boundaries. This can lead to the exposure of sensitive information or cause the server to crash, resulting in a denial of service."
            }
          ],
          "metrics": [
            {
              "other": {
                "content": {
                  "namespace": "https://access.redhat.com/security/updates/classification/",
                  "value": "Moderate"
                },
                "type": "Red Hat severity rating"
              }
            },
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "LOW",
                "baseScore": 6.1,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L",
                "version": "3.1"
              },
              "format": "CVSS"
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-805",
                  "description": "Buffer Access with Incorrect Length Value",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-06-08T03:30:19.183Z",
            "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
            "shortName": "redhat"
          },
          "references": [
            {
              "name": "RHSA-2026:20547",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:20547"
            },
            {
              "name": "RHSA-2026:20555",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:20555"
            },
            {
              "name": "RHSA-2026:20557",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:20557"
            },
            {
              "name": "RHSA-2026:20558",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:20558"
            },
            {
              "name": "RHSA-2026:20560",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:20560"
            },
            {
              "name": "RHSA-2026:20561",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:20561"
            },
            {
              "name": "RHSA-2026:20562",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:20562"
            },
            {
              "name": "RHSA-2026:20563",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:20563"
            },
            {
              "name": "RHSA-2026:20575",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:20575"
            },
            {
              "name": "RHSA-2026:20576",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:20576"
            },
            {
              "name": "RHSA-2026:20590",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:20590"
            },
            {
              "name": "RHSA-2026:21699",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:21699"
            },
            {
              "name": "RHSA-2026:21712",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:21712"
            },
            {
              "name": "RHSA-2026:21715",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:21715"
            },
            {
              "name": "RHSA-2026:21716",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:21716"
            },
            {
              "name": "RHSA-2026:21718",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:21718"
            },
            {
              "name": "RHSA-2026:21741",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:21741"
            },
            {
              "name": "RHSA-2026:21742",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:21742"
            },
            {
              "name": "RHSA-2026:22424",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:22424"
            },
            {
              "name": "RHSA-2026:22456",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:22456"
            },
            {
              "name": "RHSA-2026:23254",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:23254"
            },
            {
              "name": "RHSA-2026:23255",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:23255"
            },
            {
              "name": "RHSA-2026:23496",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:23496"
            },
            {
              "name": "RHSA-2026:24341",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:24341"
            },
            {
              "tags": [
                "vdb-entry",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/security/cve/CVE-2026-34002"
            },
            {
              "name": "RHBZ#2451112",
              "tags": [
                "issue-tracking",
                "x_refsource_REDHAT"
              ],
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451112"
            }
          ],
          "timeline": [
            {
              "lang": "en",
              "time": "2026-03-25T07:09:50.953Z",
              "value": "Reported to Red Hat."
            },
            {
              "lang": "en",
              "time": "2026-05-05T14:01:46.686Z",
              "value": "Made public."
            }
          ],
          "title": "Xorg: xwayland: x.org x server: information disclosure or denial of service via out-of-bounds read in xkb modifier map handling",
          "workarounds": [
            {
              "lang": "en",
              "value": "To mitigate this vulnerability, restrict access to the X11 server. If the X.Org X server is not required on a system, consider disabling or uninstalling it. For systems where the X server is necessary, ensure that access is limited to trusted users and networks. This can involve configuring `xhost` or implementing firewall rules to restrict connections to the X server. Any changes to X server configuration or service status may require a restart of the X server for the mitigation to take effect, which will impact active graphical sessions."
            }
          ],
          "x_generator": {
            "engine": "cvelib 1.8.0"
          },
          "x_redhatCweChain": "CWE-805: Buffer Access with Incorrect Length Value"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "assignerShortName": "redhat",
        "cveId": "CVE-2026-34002",
        "datePublished": "2026-05-05T14:41:10.065Z",
        "dateReserved": "2026-03-25T04:53:13.615Z",
        "dateUpdated": "2026-06-08T03:30:19.183Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }

    CVE-2026-34000 (GCVE-0-2026-34000)

    Vulnerability from nvd – Published: 2026-05-05 14:41 – Updated: 2026-06-08 03:30
    VLAI
    Title
    Xwayland: xorg: x.org x server: information disclosure and denial of service via out-of-bounds read in xkb geometry processing.
    Summary
    A flaw was found in the X.Org X server. This out-of-bounds read vulnerability in the XKB geometry processing, specifically within the `CheckSetGeom()` and `XkbAddGeomKeyAlias` functions, allows an attacker to read uninitialized or out-of-bounds memory. An attacker with a connection to the X11 server, either locally or remotely, can exploit this without user interaction. This could lead to the disclosure of memory contents or cause a denial of service by crashing the server.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    URL Tags
    https://access.redhat.com/errata/RHSA-2026:19342 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:20547 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:20555 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:20557 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:20558 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:20560 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:20561 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:20562 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:20563 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:20575 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:20576 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:20590 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:21699 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:21712 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:21715 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:21716 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:21718 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:21741 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:21742 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:22424 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:22456 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:23254 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:23255 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:23496 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:24341 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/security/cve/CVE-2026-34000 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2451107 issue-trackingx_refsource_REDHAT
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support Unaffected: 0:24.1.5-6.el10_0 , < * (rpm)
        cpe:/o:redhat:enterprise_linux_eus:10.0
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION Unaffected: 0:1.1.0-25.el6_10.16 , < * (rpm)
        cpe:/o:redhat:rhel_els:6
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:1.20.4-34.el7_9 , < * (rpm)
        cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:1.8.0-36.el7_9.4 , < * (rpm)
        cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.20.10-4.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.11.0-8.el8_4.15 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.10-4.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.11.0-8.el8_4.15 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:21.1.3-2.el8_6.6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_e4s:8.6::appstream
        cpe:/a:redhat:rhel_tus:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.20.11-7.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_e4s:8.6::appstream
        cpe:/a:redhat:rhel_tus:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.12.0-6.el8_6.17 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:1.12.0-6.el8_6.17 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service Unaffected: 0:21.1.3-2.el8_6.6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_e4s:8.6::appstream
        cpe:/a:redhat:rhel_tus:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service Unaffected: 0:1.20.11-7.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_e4s:8.6::appstream
        cpe:/a:redhat:rhel_tus:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions Unaffected: 0:21.1.3-2.el8_6.6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_e4s:8.6::appstream
        cpe:/a:redhat:rhel_tus:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions Unaffected: 0:1.20.11-7.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_e4s:8.6::appstream
        cpe:/a:redhat:rhel_tus:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:21.1.3-13.el8_8 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:1.20.11-18.el8_8 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:1.12.0-15.el8_8.17 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:21.1.3-13.el8_8 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:1.20.11-18.el8_8 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:1.12.0-15.el8_8.17 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.1 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Unaffected: 0:21.1.3-5.el9_0 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.0::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Unaffected: 0:1.20.11-13.el9_0 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.0::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Unaffected: 0:1.11.0-22.el9_0.17 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.0::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:21.1.3-10.el9_2 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.20.11-20.el9_2 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.12.0-14.el9_2.14 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support Unaffected: 0:1.20.11-28.el9_4 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.4::appstream
        cpe:/a:redhat:rhel_eus:9.4::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support Unaffected: 0:22.1.9-8.el9_4 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support Unaffected: 0:1.13.1-8.el9_4.9 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:1.20.11-33.el9_6 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:23.2.7-6.el9_6 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:1.14.1-10.el9_6 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 10     cpe:/o:redhat:enterprise_linux:10
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
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    Date Public
    2026-05-05 14:01
    Credits
    Red Hat would like to thank Jan-Niklas Sohn (TrendAI Zero Day Initiative) for reporting this issue.
    Show details on NVD website

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    CVE-2026-56003 (GCVE-0-2026-56003)

    Vulnerability from cvelistv5 – Published: 2026-07-08 09:25 – Updated: 2026-07-08 12:06
    VLAI
    Title
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    Summary
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    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-122 - Heap-based buffer overflow
    Assigner
    Impacted products
    Vendor Product Version
    X.Org libXfont2 Affected: 0 , < 2.0.8 (rpm)
    Create a notification for this product.
    Date Public
    2026-07-08 09:22
    Credits
    Anonymous working with Trend Micro Zero Day Initiative
    Show details on NVD website

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    CVE-2026-56002 (GCVE-0-2026-56002)

    Vulnerability from cvelistv5 – Published: 2026-07-08 09:12 – Updated: 2026-07-08 12:07
    VLAI
    Title
    libXfont2 PCF Font Parsing Heap Buffer Overflow
    Summary
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    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-122 - Heap-based buffer overflow
    Assigner
    Impacted products
    Vendor Product Version
    X.Org libXfont2 Affected: 0 , < 2.0.8 (rpm)
    Create a notification for this product.
    Date Public
    2026-07-08 09:08
    Credits
    Anonymous working with Trend Micro Zero Day Initiative.
    Show details on NVD website

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    CVE-2026-56001 (GCVE-0-2026-56001)

    Vulnerability from cvelistv5 – Published: 2026-07-08 08:49 – Updated: 2026-07-08 12:08
    VLAI
    Title
    libXfont2 BitmapScaleBitmaps Integer Overflow Heap Buffer Overflow
    Summary
    A heap buffer overflow in BitmapScaleBitmaps in libXfont2 before 2.0.8 due to an overflowing 32bit size could be used by attackers able to access the X Server to execute code within the X server cont
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-122 - Heap-based buffer overflow
    Assigner
    Impacted products
    Vendor Product Version
    X.Org libXfont2 Affected: 0 , < 2.0.8 (rpm)
    Create a notification for this product.
    Date Public
    2026-07-08 08:15
    Credits
    Anonymous working with Trend Micro Zero Day Initiative.
    Show details on NVD website

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    CVE-2026-55999 (GCVE-0-2026-55999)

    Vulnerability from cvelistv5 – Published: 2026-07-08 08:07 – Updated: 2026-07-08 12:10
    VLAI
    Title
    xorg-server / xwayland glamor font atlas Heap Buffer Overflow
    Summary
    Local attackers with a X connection able to provide PCX fonts to the X server xorg-server before 21.2.24 and xwayland before 24.1.13 could cause a heap buffer overflow via SetFont due to missing glyph boundary checks.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-122 - Heap-based buffer overflow
    Assigner
    Impacted products
    Vendor Product Version
    X.Org xorg-server Affected: 0 , < 21.1.24 (rpm)
    Create a notification for this product.
    X.Org xwayland Affected: 0 , < 24.1.13 (rpm)
    Create a notification for this product.
    Date Public
    2026-07-08 07:51
    Credits
    Anonymous working with Trend Micro Zero Day Initiative.
    Show details on NVD website

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    CVE-2026-56000 (GCVE-0-2026-56000)

    Vulnerability from cvelistv5 – Published: 2026-07-08 07:36 – Updated: 2026-07-08 12:42
    VLAI
    Title
    xorg-x11-server / xwayland GLX contextTags Use-After-Free in CommonMakeCurrent()
    Summary
    Local attackers with a X connection able to provide GLX commit to the X server xorg-server before 21.2.24 and xwayland before 24.1.13 could cause a Heap Use After Free, due to CommonMakeCurrent() pointing into potentially reallocated memory.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    Impacted products
    Vendor Product Version
    X.Org xorg-x11-server Affected: 0 , < 21.1.24 (rpm)
    Create a notification for this product.
    X.Org xwayland Affected: 0 , < 24.1.13 (rpmver)
    Create a notification for this product.
    Date Public
    2026-07-08 07:30
    Credits
    Anonymous working with Trend Micro Zero Day Initiative.
    Show details on NVD website

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    CVE-2026-50263 (GCVE-0-2026-50263)

    Vulnerability from cvelistv5 – Published: 2026-06-05 10:36 – Updated: 2026-07-08 19:27
    VLAI
    Title
    Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free information disclosure in createsaverwindow()
    Summary
    A use-after-free flaw was found in the X.Org X server and Xwayland in CreateSaverWindow(). A client can trigger a use-after-free read after changing window attributes and forcing the screen saver, leading to information disclosure.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    URL Tags
    https://access.redhat.com/errata/RHSA-2026:26562 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26566 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26590 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26610 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26709 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:28923 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:29844 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36083 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36085 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36086 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36087 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36632 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36633 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36634 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36768 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36791 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36792 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36798 vendor-advisoryx_refsource_REDHAT
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    https://lists.x.org/archives/xorg-announce/2026-J…
    https://redhat.atlassian.net/browse/PSIRTSUPT-16950
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support Unaffected: 0:24.1.5-6.el10_0.1 , < * (rpm)
        cpe:/o:redhat:enterprise_linux_eus:10.0
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:1.20.4-35.el7_9 , < * (rpm)
        cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
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    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-10.el8_10 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
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    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:1.20.11-19.el8_8 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
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    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:1.20.11-19.el8_8 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
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    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
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    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.20.11-21.el9_2 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
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    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:21.1.3-10.el9_2.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
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    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:1.20.11-29.el9_4 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:22.1.9-8.el9_4.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
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    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:1.20.11-34.el9_6 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
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    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:23.2.7-6.el9_6.1 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
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    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
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    Date Public
    2026-06-02 00:00
    Credits
    Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter.
    Show details on NVD website

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    CVE-2026-50262 (GCVE-0-2026-50262)

    Vulnerability from cvelistv5 – Published: 2026-06-05 10:36 – Updated: 2026-07-08 19:27
    VLAI
    Title
    Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: out-of-bounds read/write in glx changedrawableattributes
    Summary
    An out-of-bounds read flaw was found in the X.Org X server and Xwayland in __glXDisp_ChangeDrawableAttributes(). A wrong size validation check can read a client-controlled number of bytes, exceeding the request buffer, leading to information disclosure. A write path also exists but requires byte-swapped clients which is disabled by default.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    URL Tags
    https://access.redhat.com/errata/RHSA-2026:26562 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26566 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26590 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26610 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26709 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:28923 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:29844 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36083 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36085 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36086 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36087 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36632 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36633 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36634 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36768 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36791 vendor-advisoryx_refsource_REDHAT
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    https://access.redhat.com/errata/RHSA-2026:36798 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/security/cve/CVE-2026-50262 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2485387 issue-trackingx_refsource_REDHAT
    https://gitlab.freedesktop.org/xorg/xserver/-/com…
    https://lists.x.org/archives/xorg-announce/2026-J…
    https://redhat.atlassian.net/browse/PSIRTSUPT-16950
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support Unaffected: 0:24.1.5-6.el10_0.1 , < * (rpm)
        cpe:/o:redhat:enterprise_linux_eus:10.0
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:1.20.4-35.el7_9 , < * (rpm)
        cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-10.el8_10 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:1.20.11-19.el8_8 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:1.20.11-19.el8_8 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.20.11-21.el9_2 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:21.1.3-10.el9_2.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:1.20.11-29.el9_4 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:22.1.9-8.el9_4.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:1.20.11-34.el9_6 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:23.2.7-6.el9_6.1 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
    Create a notification for this product.
    Date Public
    2026-06-02 00:00
    Credits
    Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter.
    Show details on NVD website

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    CVE-2026-50264 (GCVE-0-2026-50264)

    Vulnerability from cvelistv5 – Published: 2026-06-05 10:36 – Updated: 2026-07-08 16:23
    VLAI
    Title
    Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: out-of-bounds heap write in dri2 drigetbuffers/drigetbufferswithformat
    Summary
    An out-of-bounds write flaw was found in the X.Org X server and Xwayland in DRIGetBuffers/DRIGetBuffersWithFormat. A client that requests multiple DRI2BufferBackLeft attachments and one DRI2BufferFrontLeft can trigger an out-of-bounds heap write. This may be used to crash the server, or for privilege escalation if the X server runs as root.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    URL Tags
    https://access.redhat.com/errata/RHSA-2026:26562 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26566 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26590 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26610 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26709 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:28923 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:29844 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36083 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36085 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36086 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36087 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36632 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36633 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36634 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36791 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36792 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/security/cve/CVE-2026-50264 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2485389 issue-trackingx_refsource_REDHAT
    https://gitlab.freedesktop.org/xorg/xserver/-/com…
    https://lists.x.org/archives/xorg-announce/2026-J…
    https://redhat.atlassian.net/browse/PSIRTSUPT-16950
    https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:1.20.4-35.el7_9 , < * (rpm)
        cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-10.el8_10 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.20.11-21.el9_2 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:21.1.3-10.el9_2.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:1.20.11-29.el9_4 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:22.1.9-8.el9_4.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:1.20.11-34.el9_6 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:23.2.7-6.el9_6.1 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux Server (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux Server Optional (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 8)     cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.2)     cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.4)     cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 9)     cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CRB (v. 8)     cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat CodeReady Linux Builder EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)     cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Date Public
    2026-06-02 00:00
    Credits
    This issue was discovered by Peter Hutterer (Red Hat).
    Show details on NVD website

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    CVE-2026-50261 (GCVE-0-2026-50261)

    Vulnerability from cvelistv5 – Published: 2026-06-05 10:36 – Updated: 2026-07-08 16:23
    VLAI
    Title
    Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in syncchangecounter()
    Summary
    A use-after-free flaw was found in the X.Org X server and Xwayland in SyncChangeCounter(). A client that sets up multiple SyncCounters can trigger a use-after-free when destroying those counters via a second client connection while changing those counters. This may be used to crash the server, or for privilege escalation if the X server runs as root.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    URL Tags
    https://access.redhat.com/errata/RHSA-2026:26562 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26566 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26590 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26610 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26709 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:28923 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:29844 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36083 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36085 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36086 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36087 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36632 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36633 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36634 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36791 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36792 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/security/cve/CVE-2026-50261 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2485386 issue-trackingx_refsource_REDHAT
    https://gitlab.freedesktop.org/xorg/xserver/-/com…
    https://lists.x.org/archives/xorg-announce/2026-J…
    https://redhat.atlassian.net/browse/PSIRTSUPT-16950
    https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:1.20.4-35.el7_9 , < * (rpm)
        cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-10.el8_10 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.20.11-21.el9_2 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:21.1.3-10.el9_2.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:1.20.11-29.el9_4 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:22.1.9-8.el9_4.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:1.20.11-34.el9_6 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:23.2.7-6.el9_6.1 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux Server (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux Server Optional (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 8)     cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.2)     cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.4)     cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 9)     cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CRB (v. 8)     cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat CodeReady Linux Builder EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)     cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Date Public
    2026-06-02 00:00
    Credits
    Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter.
    Show details on NVD website

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            },
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          ],
          "title": "Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in syncchangecounter()",
          "x_generator": {
            "engine": "cvelib 1.8.0"
          },
          "x_redhatCweChain": "CWE-416: Use After Free"
        }
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        "cveId": "CVE-2026-50261",
        "datePublished": "2026-06-05T10:36:33.418Z",
        "dateReserved": "2026-06-04T14:55:24.012Z",
        "dateUpdated": "2026-07-08T16:23:30.213Z",
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    }

    CVE-2026-50260 (GCVE-0-2026-50260)

    Vulnerability from cvelistv5 – Published: 2026-06-05 10:36 – Updated: 2026-07-08 16:23
    VLAI
    Title
    Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in freecounter()
    Summary
    A use-after-free flaw was found in the X.Org X server and Xwayland in FreeCounter(). A client that sets up multiple SyncCounters and awaits on those triggers can trigger a use-after-free when destroying those counters via a second client connection. This may be used to crash the server, or for privilege escalation if the X server runs as root.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    URL Tags
    https://access.redhat.com/errata/RHSA-2026:26562 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26566 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26590 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26610 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26709 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:28923 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:29844 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36083 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36085 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36086 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36087 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36632 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36633 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36634 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36791 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36792 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/security/cve/CVE-2026-50260 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2485385 issue-trackingx_refsource_REDHAT
    https://gitlab.freedesktop.org/xorg/xserver/-/com…
    https://lists.x.org/archives/xorg-announce/2026-J…
    https://redhat.atlassian.net/browse/PSIRTSUPT-16950
    https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:1.20.4-35.el7_9 , < * (rpm)
        cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-10.el8_10 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.20.11-21.el9_2 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:21.1.3-10.el9_2.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:1.20.11-29.el9_4 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:22.1.9-8.el9_4.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:1.20.11-34.el9_6 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:23.2.7-6.el9_6.1 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux Server (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux Server Optional (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 8)     cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.2)     cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.4)     cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 9)     cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CRB (v. 8)     cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat CodeReady Linux Builder EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)     cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Date Public
    2026-06-02 00:00
    Credits
    Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter.
    Show details on NVD website

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    CVE-2026-50258 (GCVE-0-2026-50258)

    Vulnerability from cvelistv5 – Published: 2026-06-05 10:31 – Updated: 2026-07-08 16:23
    VLAI
    Title
    Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in xkb key types due to unchecked shift levels
    Summary
    A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. The X server has multiple stack buffers sized XkbMaxShiftLevel * XkbNumKbdGroups but CheckKeyTypes() does not verify or clamp non-canonical key types to XkbMaxShiftLevel. A client can change key types to excessive shift levels and trigger stack overflows. This is caused by an incomplete fix of CVE-2025-26597. This may be used to crash the server, or for privilege escalation if the X server runs as root.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-121 - Stack-based Buffer Overflow
    Assigner
    References
    URL Tags
    https://access.redhat.com/errata/RHSA-2026:26562 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26566 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26590 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26610 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26709 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:28923 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:29844 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36083 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36085 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36086 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36087 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36632 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36633 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36634 vendor-advisoryx_refsource_REDHAT
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    https://access.redhat.com/errata/RHSA-2026:36792 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/security/cve/CVE-2026-50258 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2485383 issue-trackingx_refsource_REDHAT
    https://gitlab.freedesktop.org/xorg/xserver/-/com…
    https://lists.x.org/archives/xorg-announce/2026-J…
    https://redhat.atlassian.net/browse/PSIRTSUPT-16950
    https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:1.20.4-35.el7_9 , < * (rpm)
        cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-10.el8_10 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
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    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
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    Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
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    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
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    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
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    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
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    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.20.11-21.el9_2 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
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    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:21.1.3-10.el9_2.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
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    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:1.20.11-29.el9_4 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
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    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:22.1.9-8.el9_4.1 , < * (rpm)
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    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:1.20.11-34.el9_6 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
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    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:23.2.7-6.el9_6.1 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
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    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
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    Red Hat Red Hat Enterprise Linux Server (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
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    Red Hat Red Hat Enterprise Linux Server Optional (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
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    Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
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    Red Hat Red Hat Enterprise Linux AppStream (v. 8)     cpe:/a:redhat:enterprise_linux:8::appstream
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    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.2)     cpe:/a:redhat:rhel_e4s:9.2::appstream
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    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.4)     cpe:/a:redhat:rhel_e4s:9.4::appstream
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    Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::appstream
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    Red Hat Red Hat Enterprise Linux AppStream (v. 9)     cpe:/a:redhat:enterprise_linux:9::appstream
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    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
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    Red Hat Red Hat Enterprise Linux CRB (v. 8)     cpe:/a:redhat:enterprise_linux:8::crb
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    Red Hat Red Hat CodeReady Linux Builder EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::crb
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    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)     cpe:/a:redhat:enterprise_linux:9::crb
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    Date Public
    2026-06-02 00:00
    Credits
    Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter.
    Show details on NVD website

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    CVE-2026-50259 (GCVE-0-2026-50259)

    Vulnerability from cvelistv5 – Published: 2026-06-05 10:31 – Updated: 2026-07-08 16:23
    VLAI
    Title
    Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in xkb setmap request via mapwidths indexing
    Summary
    A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. _XkbSetMapChecks() declares a fixed-size stack buffer mapWidths[256] indexed by key type index. The helper function CheckKeyTypes() writes to this buffer at a client-controlled offset, allowing a stack buffer overflow. This may be used to crash the server, or for privilege escalation if the X server runs as root.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-121 - Stack-based Buffer Overflow
    Assigner
    References
    URL Tags
    https://access.redhat.com/errata/RHSA-2026:26562 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26566 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26590 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26610 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26709 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:28923 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:29844 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36083 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36085 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36086 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36087 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36632 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36633 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36634 vendor-advisoryx_refsource_REDHAT
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    https://access.redhat.com/errata/RHSA-2026:36792 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/security/cve/CVE-2026-50259 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2485384 issue-trackingx_refsource_REDHAT
    https://gitlab.freedesktop.org/xorg/xserver/-/com…
    https://lists.x.org/archives/xorg-announce/2026-J…
    https://redhat.atlassian.net/browse/PSIRTSUPT-16950
    https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:1.20.4-35.el7_9 , < * (rpm)
        cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-10.el8_10 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.20.11-21.el9_2 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:21.1.3-10.el9_2.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:1.20.11-29.el9_4 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:22.1.9-8.el9_4.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:1.20.11-34.el9_6 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:23.2.7-6.el9_6.1 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux Server (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux Server Optional (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 8)     cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.2)     cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.4)     cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 9)     cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CRB (v. 8)     cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat CodeReady Linux Builder EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)     cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Date Public
    2026-06-02 00:00
    Credits
    Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter.
    Show details on NVD website

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    CVE-2026-50256 (GCVE-0-2026-50256)

    Vulnerability from cvelistv5 – Published: 2026-06-05 10:31 – Updated: 2026-07-08 16:23
    VLAI
    Title
    Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in font alias resolution due to libxfont2 name length mismatch
    Summary
    A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. A mismatch between the X server and the libXfont2 library's maximum font name length can cause a stack buffer overflow during font alias resolution. The server allocates a 256 byte stack buffer but libXfont2's alias target name length is 1024 bytes. A font alias name between 257 and 1023 bytes causes the X server to copy that name into the undersized stack buffer without further checks. This may be used to crash the server, or for privilege escalation if the X server runs as root.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-121 - Stack-based Buffer Overflow
    Assigner
    References
    URL Tags
    https://access.redhat.com/errata/RHSA-2026:26562 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26566 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26590 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26610 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26709 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:28923 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:29844 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36083 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36085 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36086 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36087 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36632 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36633 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36634 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36791 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36792 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/security/cve/CVE-2026-50256 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2485380 issue-trackingx_refsource_REDHAT
    https://gitlab.freedesktop.org/xorg/xserver/-/com…
    https://lists.x.org/archives/xorg-announce/2026-J…
    https://redhat.atlassian.net/browse/PSIRTSUPT-16950
    https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:1.20.4-35.el7_9 , < * (rpm)
        cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-10.el8_10 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.20.11-21.el9_2 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:21.1.3-10.el9_2.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:1.20.11-29.el9_4 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:22.1.9-8.el9_4.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:1.20.11-34.el9_6 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:23.2.7-6.el9_6.1 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux Server (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux Server Optional (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 8)     cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.2)     cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.4)     cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 9)     cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CRB (v. 8)     cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat CodeReady Linux Builder EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)     cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Date Public
    2026-06-02 00:00
    Credits
    Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter.
    Show details on NVD website

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          "title": "Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in font alias resolution due to libxfont2 name length mismatch",
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    CVE-2026-50257 (GCVE-0-2026-50257)

    Vulnerability from cvelistv5 – Published: 2026-06-05 10:31 – Updated: 2026-07-08 16:23
    VLAI
    Title
    Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in misyncdestroyfence()
    Summary
    A use-after-free flaw was found in the X.Org X server and Xwayland in miSyncDestroyFence(). A client that sets up multiple fence triggers can trigger a use-after-free function pointer call. An attacker would connect to the X server to set up a fence and await that fence, then a second X connection destroys the fence, causing the use-after-free. This may be used to crash the server, or for privilege escalation if the X server runs as root.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    URL Tags
    https://access.redhat.com/errata/RHSA-2026:26562 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26566 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26590 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26610 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:26709 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:28923 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:29844 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36083 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36085 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36086 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36087 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36632 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36633 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36634 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36791 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/errata/RHSA-2026:36792 vendor-advisoryx_refsource_REDHAT
    https://access.redhat.com/security/cve/CVE-2026-50257 vdb-entryx_refsource_REDHAT
    https://bugzilla.redhat.com/show_bug.cgi?id=2485382 issue-trackingx_refsource_REDHAT
    https://gitlab.freedesktop.org/xorg/xserver/-/com…
    https://lists.x.org/archives/xorg-announce/2026-J…
    https://redhat.atlassian.net/browse/PSIRTSUPT-16950
    https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:1.20.4-35.el7_9 , < * (rpm)
        cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-10.el8_10 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.2 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.20.11-21.el9_2 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:21.1.3-10.el9_2.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:1.20.11-29.el9_4 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:22.1.9-8.el9_4.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:1.20.11-34.el9_6 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:23.2.7-6.el9_6.1 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux Server (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux Server Optional (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 8)     cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.2)     cpe:/a:redhat:rhel_e4s:9.2::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.4)     cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 9)     cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CRB (v. 8)     cpe:/a:redhat:enterprise_linux:8::crb
    Create a notification for this product.
    Red Hat Red Hat CodeReady Linux Builder EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::crb
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)     cpe:/a:redhat:enterprise_linux:9::crb
    Create a notification for this product.
    Date Public
    2026-06-02 00:00
    Credits
    Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter.
    Show details on NVD website

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