{
  "document": {
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      "text": "Critical"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "Red Hat OpenShift Container Platform release 4.12.92 is now available with\nupdates to packages and images that fix several bugs and add enhancements.\n\nThis release includes a security update for Red Hat OpenShift Container\nPlatform 4.12.\n\nRed Hat Product Security has rated this update as having a security impact\nof  Low. A Common Vulnerability Scoring System (CVSS) base score, which\ngives a detailed severity rating, is available for each vulnerability from\nthe CVE link(s) in the References section.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "Red Hat OpenShift Container Platform is Red Hat\u0027s cloud computing\nKubernetes application platform solution designed for on-premise or private\ncloud deployments.\n\nThis advisory contains the container images for Red Hat OpenShift Container\nPlatform 4.12.92. See the following advisory for the RPM packages for this\nrelease:\n\nhttps://access.redhat.com/errata/RHSA-2026:26527\n\nSpace precludes documenting all of the container images in this advisory.\nSee the following Release Notes documentation, which will be updated\nshortly for this release, for details about these changes:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes\n\nSecurity Fix(es):\n\nNone\n\nFor more details about the security issue(s), including the impact, a CVSS\nscore, acknowledgments, and other related information, refer to the CVE\npage(s) listed in the References section.\n\nAll OpenShift Container Platform 4.12 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/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
        "title": "Details"
      },
      {
        "category": "legal_disclaimer",
        "text": "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.",
        "title": "Terms of Use"
      }
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    "publisher": {
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      "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.",
      "name": "Red Hat Product Security",
      "namespace": "https://www.redhat.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "https://access.redhat.com/errata/RHSA-2026:26528",
        "url": "https://access.redhat.com/errata/RHSA-2026:26528"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/updates/classification/#critical",
        "url": "https://access.redhat.com/security/updates/classification/#critical"
      },
      {
        "category": "external",
        "summary": "2454469",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2454469"
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      {
        "category": "external",
        "summary": "2458077",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2458077"
      },
      {
        "category": "external",
        "summary": "2458084",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2458084"
      },
      {
        "category": "external",
        "summary": "2464351",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464351"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_26528.json"
      }
    ],
    "title": "Red Hat Security Advisory: OpenShift Container Platform 4.12.92 bug fix and security update",
    "tracking": {
      "current_release_date": "2026-06-26T06:46:50+00:00",
      "generator": {
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      "id": "RHSA-2026:26528",
      "initial_release_date": "2026-06-25T08:39:40+00:00",
      "revision_history": [
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          "date": "2026-06-25T08:39:40+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-06-25T08:39:40+00:00",
          "number": "2",
          "summary": "Last updated version"
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          "date": "2026-06-26T06:46:50+00:00",
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      "status": "final",
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  "product_tree": {
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                "name": "Red Hat OpenShift Container Platform 4.12",
                "product": {
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                  "product_id": "8Base-RHOSE-4.12",
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            ],
            "category": "product_family",
            "name": "Red Hat OpenShift Enterprise"
          },
          {
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                "name": "rhcos-x86_64-412.86.202606140301-0",
                "product": {
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            "name": "x86_64"
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        "category": "vendor",
        "name": "Red Hat"
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    "relationships": [
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        "full_product_name": {
          "name": "rhcos-x86_64-412.86.202606140301-0 as a component of Red Hat OpenShift Container Platform 4.12",
          "product_id": "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202606140301-0"
        },
        "product_reference": "rhcos-x86_64-412.86.202606140301-0",
        "relates_to_product_reference": "8Base-RHOSE-4.12"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-35385",
      "cwe": {
        "id": "CWE-281",
        "name": "Improper Preservation of Permissions"
      },
      "discovery_date": "2026-04-02T17:01:07.052864+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2454469"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in OpenSSH. When the `scp` command is used by a root user to download a file with the legacy protocol option (`-O`) and without preserving original file permissions (`-p`), the downloaded file can be installed with elevated privileges (setuid or setgid). This unexpected behavior could allow a malicious file to execute with higher permissions than intended, posing a security risk through potential privilege escalation.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "OpenSSH: OpenSSH: Privilege escalation via scp legacy protocol when not preserving file mode",
          "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": [
          "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202606140301-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-35385"
        },
        {
          "category": "external",
          "summary": "RHBZ#2454469",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2454469"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-35385",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-35385"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-35385",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-35385"
        },
        {
          "category": "external",
          "summary": "https://marc.info/?l=openssh-unix-dev\u0026m=177513443901484\u0026w=2",
          "url": "https://marc.info/?l=openssh-unix-dev\u0026m=177513443901484\u0026w=2"
        },
        {
          "category": "external",
          "summary": "https://www.openssh.org/releasenotes.html#10.3p1",
          "url": "https://www.openssh.org/releasenotes.html#10.3p1"
        },
        {
          "category": "external",
          "summary": "https://www.openwall.com/lists/oss-security/2026/04/02/3",
          "url": "https://www.openwall.com/lists/oss-security/2026/04/02/3"
        }
      ],
      "release_date": "2026-04-02T16:30:59.615000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-25T08:39:40+00:00",
          "details": "For OpenShift Container Platform 4.12 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/4.12/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 sha256:4d3bbcec187be94449a001896fcd21e41580dbba1cac38717905a2cb31a94a6e\n\nAll OpenShift Container Platform 4.12 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/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
          "product_ids": [
            "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202606140301-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:26528"
        },
        {
          "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": [
            "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202606140301-0"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202606140301-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "OpenSSH: OpenSSH: Privilege escalation via scp legacy protocol when not preserving file mode"
    },
    {
      "cve": "CVE-2026-39979",
      "cwe": {
        "id": "CWE-125",
        "name": "Out-of-bounds Read"
      },
      "discovery_date": "2026-04-13T23:01:01.219840+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2458077"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in jq, a command line JSON processor, specifically in the libjq API. Parsing a malformed JSON input from a non-NUL-terminated buffer using the `jv_parse_sized` function can cause an out-of-bounds read, resulting in an application crash and a possible memory disclosure within the error message generated by the parser.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "jq: out-of-bounds read in jv_parse_sized() on error formatting for non-NUL-terminated buffers",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "To exploit this flaw, an attacker needs to supply malformed JSON from a non-NUL-terminated buffer to an application using the `jv_parse_sized` function. This allows the attacker to trigger the out-of-bounds read, causing an application crash and potentially disclosing memory with no other security impact. As this issue affects the libjq library, it is more likely to be exposed to untrusted input. Due to these reasons, this vulnerability has been rated with an important severity.",
          "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": [
          "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202606140301-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-39979"
        },
        {
          "category": "external",
          "summary": "RHBZ#2458077",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2458077"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-39979",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-39979"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-39979",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39979"
        },
        {
          "category": "external",
          "summary": "https://github.com/jqlang/jq/commit/2f09060afab23fe9390cce7cb860b10416e1bf5f",
          "url": "https://github.com/jqlang/jq/commit/2f09060afab23fe9390cce7cb860b10416e1bf5f"
        },
        {
          "category": "external",
          "summary": "https://github.com/jqlang/jq/security/advisories/GHSA-2hhh-px8h-355p",
          "url": "https://github.com/jqlang/jq/security/advisories/GHSA-2hhh-px8h-355p"
        }
      ],
      "release_date": "2026-04-13T22:18:56.252000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-25T08:39:40+00:00",
          "details": "For OpenShift Container Platform 4.12 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/4.12/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 sha256:4d3bbcec187be94449a001896fcd21e41580dbba1cac38717905a2cb31a94a6e\n\nAll OpenShift Container Platform 4.12 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/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
          "product_ids": [
            "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202606140301-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:26528"
        },
        {
          "category": "workaround",
          "details": "To mitigate this issue, manually ensure that every buffer is NUL-terminated before passing it to the \u0027jv_parse_sized\u0027 function.",
          "product_ids": [
            "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202606140301-0"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202606140301-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "jq: out-of-bounds read in jv_parse_sized() on error formatting for non-NUL-terminated buffers"
    },
    {
      "cve": "CVE-2026-40164",
      "cwe": {
        "id": "CWE-341",
        "name": "Predictable from Observable State"
      },
      "discovery_date": "2026-04-14T00:01:04.003115+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2458084"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in jq, a command-line JSON processor. A remote attacker could exploit this vulnerability by providing a specially crafted JSON object. This object leverages a weakness in jq\u0027s hashing algorithm, which uses a hardcoded, publicly known seed. By crafting the JSON object to cause hash collisions, an attacker can degrade the performance of JSON object hash table operations, leading to significant CPU exhaustion and a denial of service (DoS) for systems processing the malicious JSON data.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "jq: jq: Denial of Service via crafted JSON object causing hash collisions",
          "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": [
          "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202606140301-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-40164"
        },
        {
          "category": "external",
          "summary": "RHBZ#2458084",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2458084"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-40164",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-40164"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-40164",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40164"
        },
        {
          "category": "external",
          "summary": "https://github.com/jqlang/jq/commit/0c7d133c3c7e37c00b6d46b658a02244fdd3c784",
          "url": "https://github.com/jqlang/jq/commit/0c7d133c3c7e37c00b6d46b658a02244fdd3c784"
        },
        {
          "category": "external",
          "summary": "https://github.com/jqlang/jq/security/advisories/GHSA-wwj8-gxm6-jc29",
          "url": "https://github.com/jqlang/jq/security/advisories/GHSA-wwj8-gxm6-jc29"
        }
      ],
      "release_date": "2026-04-13T23:40:12.693000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-25T08:39:40+00:00",
          "details": "For OpenShift Container Platform 4.12 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/4.12/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 sha256:4d3bbcec187be94449a001896fcd21e41580dbba1cac38717905a2cb31a94a6e\n\nAll OpenShift Container Platform 4.12 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/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
          "product_ids": [
            "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202606140301-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:26528"
        },
        {
          "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": [
            "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202606140301-0"
          ]
        }
      ],
      "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": [
            "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202606140301-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "jq: jq: Denial of Service via crafted JSON object causing hash collisions"
    },
    {
      "cve": "CVE-2026-43037",
      "cwe": {
        "id": "CWE-843",
        "name": "Access of Resource Using Incompatible Type (\u0027Type Confusion\u0027)"
      },
      "discovery_date": "2026-05-01T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2464351"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the Linux kernel\u0027s IPv6 tunnel implementation. A remote attacker could exploit this flaw by sending malicious ICMPv6 error messages to cause a stack-based buffer overflow in the kernel\u0027s IPv4-over-IPv6 tunnel error handling code. This could result in a kernel crash (denial of service) or potentially allow arbitrary code execution with kernel privileges.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: ip6_tunnel: clear skb2-\u003ecb[] in ip4ip6_err()",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This Critical flaw in the Linux kernel\u0027s IPv6 tunneling error handling can lead to a stack buffer overflow. An unauthenticated remote attacker could exploit this by sending specially crafted network packets, potentially resulting in a denial of service or information disclosure on affected Red Hat Enterprise Linux systems.",
          "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": [
          "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202606140301-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-43037"
        },
        {
          "category": "external",
          "summary": "RHBZ#2464351",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464351"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-43037",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-43037"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-43037",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43037"
        },
        {
          "category": "external",
          "summary": "https://lore.kernel.org/linux-cve-announce/2026050102-CVE-2026-43037-0346@gregkh/T",
          "url": "https://lore.kernel.org/linux-cve-announce/2026050102-CVE-2026-43037-0346@gregkh/T"
        }
      ],
      "release_date": "2026-05-01T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-25T08:39:40+00:00",
          "details": "For OpenShift Container Platform 4.12 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/4.12/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 sha256:4d3bbcec187be94449a001896fcd21e41580dbba1cac38717905a2cb31a94a6e\n\nAll OpenShift Container Platform 4.12 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/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.",
          "product_ids": [
            "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202606140301-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:26528"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is to skip loading the affected module `ip6_tunnel` onto the system till we have a fix available, this can be done by a blacklist mechanism, this will ensure the driver is not loaded at the boot time.\n~~~\nHow do I blacklist a kernel module to prevent it from loading automatically? \nhttps://access.redhat.com/solutions/41278  \n~~~\n\nWe may also want to detection and monitoring an affected system as below:\n~~~\nMonitor for exploitation attempts:\n\n# Enable kernel audit for IPv6 tunnel operations\nauditctl -a always,exit -F arch=b64 -S socket -F a0=10 -F a1=3 -k ipv6_tunnel\n\n# Monitor system logs for kernel panics/crashes\njournalctl -k -p err -f | grep -i \"ip6_tunnel\\|icmp\\|stack\"\n~~~",
          "product_ids": [
            "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202606140301-0"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "8Base-RHOSE-4.12:rhcos-x86_64-412.86.202606140301-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Critical"
        }
      ],
      "title": "kernel: ip6_tunnel: clear skb2-\u003ecb[] in ip4ip6_err()"
    }
  ]
}