RHSA-2026:21690

Vulnerability from csaf_redhat - Published: 2026-06-04 16:34 - Updated: 2026-07-02 19:30
Summary
Red Hat Security Advisory: OpenShift Container Platform 4.13.67 bug fix and security update
Severity
Important
Notes
Topic: Red Hat OpenShift Container Platform release 4.13.67 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red Hat OpenShift Container Platform 4.13. Red Hat Product Security has rated this update as having a security impact of Low. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. This advisory contains the container images for Red Hat OpenShift Container Platform 4.13.67. See the following advisory for the RPM packages for this release: https://access.redhat.com/errata/RHBA-2026:21689 Space precludes documenting all of the container images in this advisory. See the following Release Notes documentation, which will be updated shortly for this release, for details about these changes: https://docs.redhat.com/en/documentation/openshift_container_platform/4.13/html/release_notes Security Fix(es): None For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. All OpenShift Container Platform 4.13 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.13/html-single/updating_clusters/index#updating-cluster-within-minor.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
CVE-2026-3497

A flaw was found in the OpenSSH GSSAPI (Generic Security Service Application Program Interface) delta patches, as included in various Linux distributions. A remote attacker could exploit this by sending an unexpected GSSAPI message type during the key exchange process. This occurs because the `sshpkt_disconnect()` function, when called on an error, does not properly terminate the process, leading to the continued execution of the program with uninitialized connection variables. Accessing these uninitialized variables can lead to undefined behavior, potentially resulting in information disclosure or a denial of service.

8.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
CWE-824 - Access of Uninitialized Pointer
Affected products
Product Identifier Version Remediation
Unresolved product id: 9Base-RHOSE-4.13:rhcos-x86_64-413.92.202605271328-0 —
Vendor Fix fix
Workaround
Threats
Impact Important
CVE-2026-4424

A flaw was found in libarchive. This heap out-of-bounds read vulnerability exists in the RAR archive processing logic due to improper validation of the LZSS sliding window size after transitions between compression methods. A remote attacker can exploit this by providing a specially crafted RAR archive, leading to the disclosure of sensitive heap memory information without requiring authentication or user interaction.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE-125 - Out-of-bounds Read
Affected products
Product Identifier Version Remediation
Unresolved product id: 9Base-RHOSE-4.13:rhcos-x86_64-413.92.202605271328-0 —
Vendor Fix fix
Workaround
Threats
Impact Important
CVE-2026-5121

A flaw was found in libarchive. On 32-bit systems, an integer overflow vulnerability exists in the zisofs block pointer allocation logic. A remote attacker can exploit this by providing a specially crafted ISO9660 image, which can lead to a heap buffer overflow. This could potentially allow for arbitrary code execution on the affected system.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE-190 - Integer Overflow or Wraparound
Affected products
Product Identifier Version Remediation
Unresolved product id: 9Base-RHOSE-4.13:rhcos-x86_64-413.92.202605271328-0 —
Vendor Fix fix
Workaround
Threats
Impact Moderate
CVE-2026-27135

A flaw was found in nghttp2. Due to missing internal state validation, the library continues to process incoming data even after a session has been terminated. A remote attacker could exploit this by sending a specially crafted HTTP/2 frame, leading to an assertion failure and a denial of service (DoS).

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-617 - Reachable Assertion
Affected products
Product Identifier Version Remediation
Unresolved product id: 9Base-RHOSE-4.13:rhcos-x86_64-413.92.202605271328-0 —
Vendor Fix fix
Threats
Impact Important
CVE-2026-35535

A flaw was found in Sudo. A local user could exploit a failure in the setuid, setgid, or setgroups calls, which are used to drop privileges before running the mailer. This oversight allows for privilege escalation, enabling the user to gain elevated access on the system.

7.4 (High)
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-272 - Least Privilege Violation
Affected products
Product Identifier Version Remediation
Unresolved product id: 9Base-RHOSE-4.13:rhcos-x86_64-413.92.202605271328-0 —
Vendor Fix fix
Threats
Impact Important
CVE-2026-43503

A flaw was found in the Linux kernel's networking (skbuff) component. When skb_try_coalesce() attaches paged fragments, it can lose the SKBFL_SHARED_FRAG marker. This can lead to the Encapsulating Security Payload (ESP) input decrypting data in place over page-cache backed fragments, potentially resulting in data corruption.

7.0 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-664 - Improper Control of a Resource Through its Lifetime
Affected products
Product Identifier Version Remediation
Unresolved product id: 9Base-RHOSE-4.13:rhcos-x86_64-413.92.202605271328-0 —
Vendor Fix fix
Workaround
Threats
Impact Important
CVE-2026-46300

A flaw was found in the Linux kernel's XFRM ESP-in-TCP subsystem. Unsafe in-place cryptographic processing allows a low-privileged local attacker to write arbitrary bytes into the page cache of read-only files, including sensitive system files. An attacker can exploit this to overwrite privileged binaries and gain root privileges.

7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-123 - Write-what-where Condition
Affected products
Product Identifier Version Remediation
Unresolved product id: 9Base-RHOSE-4.13:rhcos-x86_64-413.92.202605271328-0 —
Vendor Fix fix
Workaround
Threats
Impact Important
References
URL Category
https://access.redhat.com/errata/RHSA-2026:21690 self
https://access.redhat.com/security/updates/classi… external
https://bugzilla.redhat.com/show_bug.cgi?id=2447085 external
https://bugzilla.redhat.com/show_bug.cgi?id=2448754 external
https://bugzilla.redhat.com/show_bug.cgi?id=2449006 external
https://bugzilla.redhat.com/show_bug.cgi?id=2452945 external
https://bugzilla.redhat.com/show_bug.cgi?id=2454714 external
https://bugzilla.redhat.com/show_bug.cgi?id=2477015 external
https://security.access.redhat.com/data/csaf/v2/a… self
https://access.redhat.com/security/cve/CVE-2026-3497 self
https://bugzilla.redhat.com/show_bug.cgi?id=2447085 external
https://www.cve.org/CVERecord?id=CVE-2026-3497 external
https://nvd.nist.gov/vuln/detail/CVE-2026-3497 external
https://ubuntu.com/security/CVE-2026-3497 external
https://www.openwall.com/lists/oss-security/2026/… external
https://access.redhat.com/security/cve/CVE-2026-4424 self
https://bugzilla.redhat.com/show_bug.cgi?id=2449006 external
https://www.cve.org/CVERecord?id=CVE-2026-4424 external
https://nvd.nist.gov/vuln/detail/CVE-2026-4424 external
https://github.com/libarchive/libarchive/pull/2898 external
https://access.redhat.com/security/cve/CVE-2026-5121 self
https://bugzilla.redhat.com/show_bug.cgi?id=2452945 external
https://www.cve.org/CVERecord?id=CVE-2026-5121 external
https://nvd.nist.gov/vuln/detail/CVE-2026-5121 external
https://github.com/advisories/GHSA-2vwv-vqpv-v8vc external
https://github.com/libarchive/libarchive/pull/2934 external
https://access.redhat.com/security/cve/CVE-2026-27135 self
https://bugzilla.redhat.com/show_bug.cgi?id=2448754 external
https://www.cve.org/CVERecord?id=CVE-2026-27135 external
https://nvd.nist.gov/vuln/detail/CVE-2026-27135 external
https://github.com/nghttp2/nghttp2/commit/5c7df8f… external
https://github.com/nghttp2/nghttp2/security/advis… external
https://access.redhat.com/security/cve/CVE-2026-35535 self
https://bugzilla.redhat.com/show_bug.cgi?id=2454714 external
https://www.cve.org/CVERecord?id=CVE-2026-35535 external
https://nvd.nist.gov/vuln/detail/CVE-2026-35535 external
https://bugs.debian.org/1130593 external
https://bugs.launchpad.net/ubuntu/+source/sudo/+b… external
https://github.com/sudo-project/sudo/commit/3e474… external
https://www.qualys.com/2026/03/10/crack-armor.txt external
https://access.redhat.com/security/cve/CVE-2026-43503 self
https://bugzilla.redhat.com/show_bug.cgi?id=2480902 external
https://access.redhat.com/security/vulnerabilitie… external
https://www.cve.org/CVERecord?id=CVE-2026-43503 external
https://nvd.nist.gov/vuln/detail/CVE-2026-43503 external
https://git.kernel.org/pub/scm/linux/security/vul… external
https://access.redhat.com/security/cve/CVE-2026-46300 self
https://bugzilla.redhat.com/show_bug.cgi?id=2477015 external
https://www.cve.org/CVERecord?id=CVE-2026-46300 external
https://nvd.nist.gov/vuln/detail/CVE-2026-46300 external
Acknowledgments
Elhanan Haenel
To clipboard 

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          "details": "For OpenShift Container Platform 4.13 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.13/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n      The sha value for the release is as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:596514a0fcc2e3110cbcdf2fc57295c2df375f2f0ff36452ff0d7d181ad6c603\n\nAll OpenShift Container Platform 4.13 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.13/html-single/updating_clusters/index#updating-cluster-within-minor.",
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            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
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            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
            "version": "3.1"
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      "title": "openssh: OpenSSH GSSAPI: Information disclosure or denial of service due to uninitialized variables"
    },
    {
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          "names": [
            "Elhanan Haenel"
          ]
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      ],
      "cve": "CVE-2026-4424",
      "cwe": {
        "id": "CWE-125",
        "name": "Out-of-bounds Read"
      },
      "discovery_date": "2026-03-19T12:22:21.740000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2449006"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in libarchive. This heap out-of-bounds read vulnerability exists in the RAR archive processing logic due to improper validation of the LZSS sliding window size after transitions between compression methods. A remote attacker can exploit this by providing a specially crafted RAR archive, leading to the disclosure of sensitive heap memory information without requiring authentication or user interaction.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "libarchive: libarchive: Information disclosure via heap out-of-bounds read in RAR archive processing",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "IMPORTANT: This heap out-of-bounds read vulnerability in libarchive\u0027s RAR archive processing logic can lead to information disclosure. A remote attacker can exploit this flaw by providing a specially crafted RAR archive, potentially revealing sensitive heap memory information without requiring authentication or user interaction on systems that process untrusted archives.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "9Base-RHOSE-4.13:rhcos-x86_64-413.92.202605271328-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-4424"
        },
        {
          "category": "external",
          "summary": "RHBZ#2449006",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2449006"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-4424",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-4424"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-4424",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4424"
        },
        {
          "category": "external",
          "summary": "https://github.com/libarchive/libarchive/pull/2898",
          "url": "https://github.com/libarchive/libarchive/pull/2898"
        }
      ],
      "release_date": "2026-03-19T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-04T16:34:05+00:00",
          "details": "For OpenShift Container Platform 4.13 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.13/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n      The sha value for the release is as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:596514a0fcc2e3110cbcdf2fc57295c2df375f2f0ff36452ff0d7d181ad6c603\n\nAll OpenShift Container Platform 4.13 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.13/html-single/updating_clusters/index#updating-cluster-within-minor.",
          "product_ids": [
            "9Base-RHOSE-4.13:rhcos-x86_64-413.92.202605271328-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:21690"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
          "product_ids": [
            "9Base-RHOSE-4.13:rhcos-x86_64-413.92.202605271328-0"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "9Base-RHOSE-4.13:rhcos-x86_64-413.92.202605271328-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "libarchive: libarchive: Information disclosure via heap out-of-bounds read in RAR archive processing"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Elhanan Haenel"
          ]
        }
      ],
      "cve": "CVE-2026-5121",
      "cwe": {
        "id": "CWE-190",
        "name": "Integer Overflow or Wraparound"
      },
      "discovery_date": "2026-03-30T07:40:25.358335+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2452945"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in libarchive. On 32-bit systems, an integer overflow vulnerability exists in the zisofs block pointer allocation logic. A remote attacker can exploit this by providing a specially crafted ISO9660 image, which can lead to a heap buffer overflow. This could potentially allow for arbitrary code execution on the affected system.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "libarchive: libarchive: Arbitrary code execution via integer overflow in ISO9660 image processing",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Important: An integer overflow flaw in `libarchive` on 32-bit systems can lead to a heap buffer overflow. This vulnerability occurs when processing a specially crafted ISO9660 image, allowing an attacker to potentially execute arbitrary code. Red Hat Enterprise Linux 64-bit systems are not affected by this flaw.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "9Base-RHOSE-4.13:rhcos-x86_64-413.92.202605271328-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-5121"
        },
        {
          "category": "external",
          "summary": "RHBZ#2452945",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2452945"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-5121",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-5121"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-5121",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5121"
        },
        {
          "category": "external",
          "summary": "https://github.com/advisories/GHSA-2vwv-vqpv-v8vc",
          "url": "https://github.com/advisories/GHSA-2vwv-vqpv-v8vc"
        },
        {
          "category": "external",
          "summary": "https://github.com/libarchive/libarchive/pull/2934",
          "url": "https://github.com/libarchive/libarchive/pull/2934"
        }
      ],
      "release_date": "2026-03-30T07:44:15.222000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-04T16:34:05+00:00",
          "details": "For OpenShift Container Platform 4.13 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.13/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n      The sha value for the release is as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:596514a0fcc2e3110cbcdf2fc57295c2df375f2f0ff36452ff0d7d181ad6c603\n\nAll OpenShift Container Platform 4.13 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.13/html-single/updating_clusters/index#updating-cluster-within-minor.",
          "product_ids": [
            "9Base-RHOSE-4.13:rhcos-x86_64-413.92.202605271328-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:21690"
        },
        {
          "category": "workaround",
          "details": "To mitigate this issue, avoid processing untrusted ISO9660 images with applications that utilize `libarchive`. Users should only extract or read content from ISO images obtained from trusted sources.",
          "product_ids": [
            "9Base-RHOSE-4.13:rhcos-x86_64-413.92.202605271328-0"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "9Base-RHOSE-4.13:rhcos-x86_64-413.92.202605271328-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "libarchive: libarchive: Arbitrary code execution via integer overflow in ISO9660 image processing"
    },
    {
      "cve": "CVE-2026-27135",
      "cwe": {
        "id": "CWE-617",
        "name": "Reachable Assertion"
      },
      "discovery_date": "2026-03-18T19:02:13.823002+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2448754"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in nghttp2. Due to missing internal state validation, the library continues to process incoming data even after a session has been terminated. A remote attacker could exploit this by sending a specially crafted HTTP/2 frame, leading to an assertion failure and a denial of service (DoS).",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "nghttp2: nghttp2: Denial of Service via malformed HTTP/2 frames after session termination",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "9Base-RHOSE-4.13:rhcos-x86_64-413.92.202605271328-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-27135"
        },
        {
          "category": "external",
          "summary": "RHBZ#2448754",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2448754"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-27135",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-27135"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-27135",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27135"
        },
        {
          "category": "external",
          "summary": "https://github.com/nghttp2/nghttp2/commit/5c7df8fa815ac1004d9ecb9d1f7595c4d37f46e1",
          "url": "https://github.com/nghttp2/nghttp2/commit/5c7df8fa815ac1004d9ecb9d1f7595c4d37f46e1"
        },
        {
          "category": "external",
          "summary": "https://github.com/nghttp2/nghttp2/security/advisories/GHSA-6933-cjhr-5qg6",
          "url": "https://github.com/nghttp2/nghttp2/security/advisories/GHSA-6933-cjhr-5qg6"
        }
      ],
      "release_date": "2026-03-18T17:59:02.045000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-04T16:34:05+00:00",
          "details": "For OpenShift Container Platform 4.13 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.13/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n      The sha value for the release is as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:596514a0fcc2e3110cbcdf2fc57295c2df375f2f0ff36452ff0d7d181ad6c603\n\nAll OpenShift Container Platform 4.13 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.13/html-single/updating_clusters/index#updating-cluster-within-minor.",
          "product_ids": [
            "9Base-RHOSE-4.13:rhcos-x86_64-413.92.202605271328-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:21690"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "9Base-RHOSE-4.13:rhcos-x86_64-413.92.202605271328-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "nghttp2: nghttp2: Denial of Service via malformed HTTP/2 frames after session termination"
    },
    {
      "cve": "CVE-2026-35535",
      "cwe": {
        "id": "CWE-272",
        "name": "Least Privilege Violation"
      },
      "discovery_date": "2026-04-03T03:01:03.124541+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2454714"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Sudo. A local user could exploit a failure in the setuid, setgid, or setgroups calls, which are used to drop privileges before running the mailer. This oversight allows for privilege escalation, enabling the user to gain elevated access on the system.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "sudo: Sudo: Privilege escalation due to failure in privilege drop calls",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "9Base-RHOSE-4.13:rhcos-x86_64-413.92.202605271328-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-35535"
        },
        {
          "category": "external",
          "summary": "RHBZ#2454714",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2454714"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-35535",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-35535"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-35535",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-35535"
        },
        {
          "category": "external",
          "summary": "https://bugs.debian.org/1130593",
          "url": "https://bugs.debian.org/1130593"
        },
        {
          "category": "external",
          "summary": "https://bugs.launchpad.net/ubuntu/+source/sudo/+bug/2143042",
          "url": "https://bugs.launchpad.net/ubuntu/+source/sudo/+bug/2143042"
        },
        {
          "category": "external",
          "summary": "https://github.com/sudo-project/sudo/commit/3e474c2f201484be83d994ae10a4e20e8c81bb69",
          "url": "https://github.com/sudo-project/sudo/commit/3e474c2f201484be83d994ae10a4e20e8c81bb69"
        },
        {
          "category": "external",
          "summary": "https://www.qualys.com/2026/03/10/crack-armor.txt",
          "url": "https://www.qualys.com/2026/03/10/crack-armor.txt"
        }
      ],
      "release_date": "2026-04-03T02:21:33.584000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-04T16:34:05+00:00",
          "details": "For OpenShift Container Platform 4.13 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.13/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n      The sha value for the release is as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:596514a0fcc2e3110cbcdf2fc57295c2df375f2f0ff36452ff0d7d181ad6c603\n\nAll OpenShift Container Platform 4.13 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.13/html-single/updating_clusters/index#updating-cluster-within-minor.",
          "product_ids": [
            "9Base-RHOSE-4.13:rhcos-x86_64-413.92.202605271328-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:21690"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "9Base-RHOSE-4.13:rhcos-x86_64-413.92.202605271328-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "sudo: Sudo: Privilege escalation due to failure in privilege drop calls"
    },
    {
      "cve": "CVE-2026-43503",
      "cwe": {
        "id": "CWE-664",
        "name": "Improper Control of a Resource Through its Lifetime"
      },
      "discovery_date": "2026-05-23T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2480902"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the Linux kernel\u0027s networking (skbuff) component. When skb_try_coalesce() attaches paged fragments, it can lose the SKBFL_SHARED_FRAG marker. This can lead to the Encapsulating Security Payload (ESP) input decrypting data in place over page-cache backed fragments, potentially resulting in data corruption.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: net: skbuff: propagate shared-frag marker through frag-transfer helpers",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Impact is rated as Important because the privileged file-backed cache pages may be modified through a shared-page ownership bypass. Within Red Hat Enterprise Linux and Red Hat OpenShift Container Platform, this vulnerability was fixed at the same time as CVE-2026-46300.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "9Base-RHOSE-4.13:rhcos-x86_64-413.92.202605271328-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-43503"
        },
        {
          "category": "external",
          "summary": "RHBZ#2480902",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480902"
        },
        {
          "category": "external",
          "summary": "RHSB-2026-003",
          "url": "https://access.redhat.com/security/vulnerabilities/RHSB-2026-003"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-43503",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-43503"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-43503",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43503"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-43503.mbox",
          "url": "https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-43503.mbox"
        }
      ],
      "release_date": "2026-05-23T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-04T16:34:05+00:00",
          "details": "For OpenShift Container Platform 4.13 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.13/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n      The sha value for the release is as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:596514a0fcc2e3110cbcdf2fc57295c2df375f2f0ff36452ff0d7d181ad6c603\n\nAll OpenShift Container Platform 4.13 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.13/html-single/updating_clusters/index#updating-cluster-within-minor.",
          "product_ids": [
            "9Base-RHOSE-4.13:rhcos-x86_64-413.92.202605271328-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:21690"
        },
        {
          "category": "workaround",
          "details": "See the security bulletin for a detailed mitigation procedure.",
          "product_ids": [
            "9Base-RHOSE-4.13:rhcos-x86_64-413.92.202605271328-0"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.0,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "9Base-RHOSE-4.13:rhcos-x86_64-413.92.202605271328-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: net: skbuff: propagate shared-frag marker through frag-transfer helpers"
    },
    {
      "cve": "CVE-2026-46300",
      "cwe": {
        "id": "CWE-123",
        "name": "Write-what-where Condition"
      },
      "discovery_date": "2026-05-13T13:28:21.270000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2477015"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the Linux kernel\u0027s XFRM ESP-in-TCP subsystem. Unsafe in-place cryptographic processing allows a low-privileged local attacker to write arbitrary bytes into the page cache of read-only files, including sensitive system files. An attacker can exploit this to overwrite privileged binaries and gain root privileges.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: \"Fragnesia\" is a variant of Dirty Frag vulnerability in the ESP/XFRM leading to Local Privilege Escalation (LPE) vulnerability in the Linux kernel",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This issue is classified as Important, rather than Critical severity, because exploitation requires local access to the system. A low-privileged local attacker can exploit this flaw in the Linux kernel\u0027s XFRM ESP-in-TCP subsystem to gain root privileges by overwriting sensitive system files. Exploitation does not require user interaction, potentially resulting in full compromise of confidentiality, integrity, and availability.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "9Base-RHOSE-4.13:rhcos-x86_64-413.92.202605271328-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-46300"
        },
        {
          "category": "external",
          "summary": "RHBZ#2477015",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2477015"
        },
        {
          "category": "external",
          "summary": "RHSB-2026-003",
          "url": "https://access.redhat.com/security/vulnerabilities/RHSB-2026-003"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-46300",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-46300"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-46300",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46300"
        }
      ],
      "release_date": "2026-05-13T12:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-04T16:34:05+00:00",
          "details": "For OpenShift Container Platform 4.13 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.13/html/release_notes\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64 architecture. The image digest may be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\n      The sha value for the release is as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:596514a0fcc2e3110cbcdf2fc57295c2df375f2f0ff36452ff0d7d181ad6c603\n\nAll OpenShift Container Platform 4.13 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.13/html-single/updating_clusters/index#updating-cluster-within-minor.",
          "product_ids": [
            "9Base-RHOSE-4.13:rhcos-x86_64-413.92.202605271328-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:21690"
        },
        {
          "category": "workaround",
          "details": "See the security bulletin for a detailed mitigation procedure.",
          "product_ids": [
            "9Base-RHOSE-4.13:rhcos-x86_64-413.92.202605271328-0"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "9Base-RHOSE-4.13:rhcos-x86_64-413.92.202605271328-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: \"Fragnesia\" is a variant of Dirty Frag vulnerability in the ESP/XFRM leading to Local Privilege Escalation (LPE) vulnerability in the Linux kernel"
    }
  ]
}


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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • 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.


Detection rules are retrieved from Rulezet.