FKIE_CVE-2025-26595

Vulnerability from fkie_nvd - Published: 2025-02-25 16:15 - Updated: 2025-11-03 22:18
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
A buffer overflow flaw was found in X.Org and Xwayland. The code in XkbVModMaskText() allocates a fixed-sized buffer on the stack and copies the names of the virtual modifiers to that buffer. The code fails to check the bounds of the buffer and would copy the data regardless of the size.
References
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:2500Third Party Advisory
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:2502Third Party Advisory
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:2861Third Party Advisory
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:2862Third Party Advisory
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:2865Third Party Advisory
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:2866Third Party Advisory
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:2873Third Party Advisory
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:2874Third Party Advisory
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:2875Third Party Advisory
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:2879Third Party Advisory
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:2880Third Party Advisory
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:7163
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:7165
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:7458
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2025-26595Third Party Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2345257Issue Tracking
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/02/msg00036.html
Impacted products
Vendor Product Version
tigervnc tigervnc -
x.org x_server *
x.org xwayland *
redhat enterprise_linux 7.0
redhat enterprise_linux 8.0
redhat enterprise_linux 9.0
To clipboard 

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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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