{
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      "text": "Important"
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    "category": "csaf_security_advisory",
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    "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 4.18.50 is now available with\nupdates to packages and images that fix several bugs and add enhancements.\n\n This release includes a security update for Red Hat OpenShift Container\nPlatform 4.18.\n\nRed Hat Product Security has rated this update as having a security impact\nof Important. A Common Vulnerability Scoring System (CVSS) base score,\nwhich gives a detailed severity rating, is available for each vulnerability\nfrom the 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\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/4.18/html/release_notes/\n\nSecurity Fix(es):\n\n* kernel: netfilter: flowtable: strictly check for maximum number of\nactions (CVE-2026-43329)\n* kernel: Linux kernel: Use-After-Free in net/gro due to improper handling\nof zerocopy skbs (CVE-2026-46323)\n* kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected role\n(CVE-2026-53359)\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 4.18 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/4.18/html-single/updating_clusters/index#updating-cluster-cli.",
        "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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      {
        "category": "self",
        "summary": "https://access.redhat.com/errata/RHSA-2026:44230",
        "url": "https://access.redhat.com/errata/RHSA-2026:44230"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/updates/classification/#important",
        "url": "https://access.redhat.com/security/updates/classification/#important"
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      {
        "category": "external",
        "summary": "2468124",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2468124"
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      {
        "category": "external",
        "summary": "2479832",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2479832"
      },
      {
        "category": "external",
        "summary": "2497033",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2497033"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_44230.json"
      }
    ],
    "title": "Red Hat Security Advisory: OpenShift Container Platform 4.18.50 bug fix and security update",
    "tracking": {
      "current_release_date": "2026-08-19T20:50:58+00:00",
      "generator": {
        "date": "2026-08-19T20:50:58+00:00",
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          "version": "5.3.16"
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      "id": "RHSA-2026:44230",
      "initial_release_date": "2026-07-29T13:25:36+00:00",
      "revision_history": [
        {
          "date": "2026-07-29T13:25:36+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-07-29T13:25:36+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2026-08-19T20:50:58+00:00",
          "number": "3",
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        }
      ],
      "status": "final",
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        "full_product_name": {
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          "product_id": "9Base-RHOSE-4.18:rhcos-aarch64-418.94.202607211754-0"
        },
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        },
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  "vulnerabilities": [
    {
      "cve": "CVE-2026-43329",
      "cwe": {
        "id": "CWE-770",
        "name": "Allocation of Resources Without Limits or Throttling"
      },
      "discovery_date": "2026-05-08T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2468124"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the Netfilter flowtable component of the Linux kernel. This vulnerability occurs because the system does not strictly check the maximum number of hardware offload actions for IPv6, allowing it to process more actions than supported. This could potentially lead to system instability or a denial of service (DoS) condition, where the affected system becomes unresponsive.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: netfilter: flowtable: strictly check for maximum number of actions",
          "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-4.18:rhcos-aarch64-418.94.202607211754-0",
          "9Base-RHOSE-4.18:rhcos-ppc64le-418.94.202607211754-0",
          "9Base-RHOSE-4.18:rhcos-s390x-418.94.202607211754-0",
          "9Base-RHOSE-4.18:rhcos-x86_64-418.94.202607211754-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-43329"
        },
        {
          "category": "external",
          "summary": "RHBZ#2468124",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2468124"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-43329",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-43329"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-43329",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43329"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-43329.mbox",
          "url": "https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-43329.mbox"
        }
      ],
      "release_date": "2026-05-08T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-07-29T13:25:36+00:00",
          "details": "For OpenShift Container Platform 4.18 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/4.18/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64, s390x, ppc64le, and aarch64 architectures. The image digests\nmay be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:06c81645f1c2c36c637297d2b2bfc9f0441ae4b78e88e8f2e9f67879a4ceddeb\n\n      (For s390x architecture)\n      The image digest is sha256:fae2a08a585617518ca1b3a5d37eb43e1b77215390223a6658bf766472b09e29\n\n      (For ppc64le architecture)\n      The image digest is sha256:6c3bfbee4e48e56b6f0cad979e81445af095e99ebb6da0fa7d0009be26724969\n\n      (For aarch64 architecture)\n      The image digest is sha256:95179a9a06cd4be07272fdef8276105d5d6edaa88f5ac6c28a8674e2bd2e993e\n\nAll OpenShift Container Platform 4.18 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/4.18/html-single/updating_clusters/index#updating-cluster-cli.",
          "product_ids": [
            "9Base-RHOSE-4.18:rhcos-aarch64-418.94.202607211754-0",
            "9Base-RHOSE-4.18:rhcos-ppc64le-418.94.202607211754-0",
            "9Base-RHOSE-4.18:rhcos-s390x-418.94.202607211754-0",
            "9Base-RHOSE-4.18:rhcos-x86_64-418.94.202607211754-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:44230"
        }
      ],
      "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-4.18:rhcos-aarch64-418.94.202607211754-0",
            "9Base-RHOSE-4.18:rhcos-ppc64le-418.94.202607211754-0",
            "9Base-RHOSE-4.18:rhcos-s390x-418.94.202607211754-0",
            "9Base-RHOSE-4.18:rhcos-x86_64-418.94.202607211754-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: netfilter: flowtable: strictly check for maximum number of actions"
    },
    {
      "cve": "CVE-2026-46323",
      "cwe": {
        "id": "CWE-123",
        "name": "Write-what-where Condition"
      },
      "discovery_date": "2026-05-19T11:49:44.372000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2479832"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the Linux kernel\u0027s Generic Receive Offload (GRO) networking subsystem. This vulnerability occurs when `skb_gro_receive()` attempts to merge zerocopy socket buffers (skbs) without properly managing page reference counts, specifically when the `SKBFL_MANAGED_FRAG_REFS` flag is set. An attacker could potentially exploit this to trigger a Use-After-Free (UAF) condition, which is a memory corruption vulnerability that can lead to system instability or potentially arbitrary code execution.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: Linux kernel: Use-After-Free in net/gro due to improper handling of zerocopy skbs",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This is an Important flaw in the Linux kernel\u0027s Generic Receive Offload (GRO) networking subsystem. The vulnerability, a variant of Fragnesia, stems from improper management of page reference counts when merging zerocopy socket buffers. An attacker could exploit this Use-After-Free condition to achieve arbitrary code execution or cause system instability on affected Red Hat Enterprise Linux and OpenShift Container Platform 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": [
          "9Base-RHOSE-4.18:rhcos-aarch64-418.94.202607211754-0",
          "9Base-RHOSE-4.18:rhcos-ppc64le-418.94.202607211754-0",
          "9Base-RHOSE-4.18:rhcos-s390x-418.94.202607211754-0",
          "9Base-RHOSE-4.18:rhcos-x86_64-418.94.202607211754-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-46323"
        },
        {
          "category": "external",
          "summary": "RHBZ#2479832",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2479832"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-46323",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-46323"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-46323",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46323"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=1f9c828556416fbe3f49386708ce999fc4d4da06",
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=1f9c828556416fbe3f49386708ce999fc4d4da06"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=44bea2032af0425e4ce6d26a8af0ede79db49ec1",
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=44bea2032af0425e4ce6d26a8af0ede79db49ec1"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=479084ae0e1d9cb7929cb4298d35623de189f80a",
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=479084ae0e1d9cb7929cb4298d35623de189f80a"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=4db79a322db8c97f7b73b8a347395ef4d685eb40",
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=4db79a322db8c97f7b73b8a347395ef4d685eb40"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=e334cbf3388fd9334503a778a82d9e9f14dd2f71",
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=e334cbf3388fd9334503a778a82d9e9f14dd2f71"
        },
        {
          "category": "external",
          "summary": "https://lore.kernel.org/netdev/4d583fc5401298453d0a2f1b4719a15be30c8e49.1779194090.git.sd@queasysnail.net/",
          "url": "https://lore.kernel.org/netdev/4d583fc5401298453d0a2f1b4719a15be30c8e49.1779194090.git.sd@queasysnail.net/"
        },
        {
          "category": "external",
          "summary": "https://lore.kernel.org/netdev/agVpIsaSherjHTYg@sultan-box/",
          "url": "https://lore.kernel.org/netdev/agVpIsaSherjHTYg@sultan-box/"
        }
      ],
      "release_date": "2026-05-19T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-07-29T13:25:36+00:00",
          "details": "For OpenShift Container Platform 4.18 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/4.18/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64, s390x, ppc64le, and aarch64 architectures. The image digests\nmay be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:06c81645f1c2c36c637297d2b2bfc9f0441ae4b78e88e8f2e9f67879a4ceddeb\n\n      (For s390x architecture)\n      The image digest is sha256:fae2a08a585617518ca1b3a5d37eb43e1b77215390223a6658bf766472b09e29\n\n      (For ppc64le architecture)\n      The image digest is sha256:6c3bfbee4e48e56b6f0cad979e81445af095e99ebb6da0fa7d0009be26724969\n\n      (For aarch64 architecture)\n      The image digest is sha256:95179a9a06cd4be07272fdef8276105d5d6edaa88f5ac6c28a8674e2bd2e993e\n\nAll OpenShift Container Platform 4.18 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/4.18/html-single/updating_clusters/index#updating-cluster-cli.",
          "product_ids": [
            "9Base-RHOSE-4.18:rhcos-aarch64-418.94.202607211754-0",
            "9Base-RHOSE-4.18:rhcos-ppc64le-418.94.202607211754-0",
            "9Base-RHOSE-4.18:rhcos-s390x-418.94.202607211754-0",
            "9Base-RHOSE-4.18:rhcos-x86_64-418.94.202607211754-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:44230"
        },
        {
          "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": [
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            "9Base-RHOSE-4.18:rhcos-s390x-418.94.202607211754-0",
            "9Base-RHOSE-4.18:rhcos-x86_64-418.94.202607211754-0"
          ]
        }
      ],
      "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",
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            "9Base-RHOSE-4.18:rhcos-s390x-418.94.202607211754-0",
            "9Base-RHOSE-4.18:rhcos-x86_64-418.94.202607211754-0"
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          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: Linux kernel: Use-After-Free in net/gro due to improper handling of zerocopy skbs"
    },
    {
      "cve": "CVE-2026-53359",
      "cwe": {
        "id": "CWE-825",
        "name": "Expired Pointer Dereference"
      },
      "discovery_date": "2026-07-04T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2497033"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the Linux kernel\u0027s Kernel-based Virtual Machine (KVM) x86 shadow paging mechanism. This vulnerability occurs when a host page directory entry (PDE) mapping is changed from within the guest, leading to an unexpected role mismatch in shadow paging. This mismatch can cause a use-after-free condition, where the system attempts to access memory that has already been released. Such a condition can lead to system instability, denial of service, potentially the execution of arbitrary code or guest-to-host escape.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected role",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This is an Important flaw in the KVM x86 shadow paging mechanism where an attacker with privileged access inside the guest VM could trigger a use-after-free condition by manipulating page directory entries on the host. This could lead to system instability, denial of service, or potentially arbitrary code execution on the host.\n\nIn Red Hat Enterprise Linux 7, nested virtualization for KVM is a Technology Preview feature and the nested parameter defaults to 0 (disabled) for both kvm_intel and kvm_amd.",
          "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"
        }
      ],
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        ]
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      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-53359"
        },
        {
          "category": "external",
          "summary": "RHBZ#2497033",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2497033"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-53359",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-53359"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-53359",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53359"
        },
        {
          "category": "external",
          "summary": "https://lore.kernel.org/linux-cve-announce/2026070403-CVE-2026-53359-4f57@gregkh/T",
          "url": "https://lore.kernel.org/linux-cve-announce/2026070403-CVE-2026-53359-4f57@gregkh/T"
        },
        {
          "category": "external",
          "summary": "https://www.openwall.com/lists/oss-security/2026/07/06/7",
          "url": "https://www.openwall.com/lists/oss-security/2026/07/06/7"
        }
      ],
      "release_date": "2026-07-04T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-07-29T13:25:36+00:00",
          "details": "For OpenShift Container Platform 4.18 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/4.18/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64, s390x, ppc64le, and aarch64 architectures. The image digests\nmay be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:06c81645f1c2c36c637297d2b2bfc9f0441ae4b78e88e8f2e9f67879a4ceddeb\n\n      (For s390x architecture)\n      The image digest is sha256:fae2a08a585617518ca1b3a5d37eb43e1b77215390223a6658bf766472b09e29\n\n      (For ppc64le architecture)\n      The image digest is sha256:6c3bfbee4e48e56b6f0cad979e81445af095e99ebb6da0fa7d0009be26724969\n\n      (For aarch64 architecture)\n      The image digest is sha256:95179a9a06cd4be07272fdef8276105d5d6edaa88f5ac6c28a8674e2bd2e993e\n\nAll OpenShift Container Platform 4.18 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/4.18/html-single/updating_clusters/index#updating-cluster-cli.",
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            "9Base-RHOSE-4.18:rhcos-s390x-418.94.202607211754-0",
            "9Base-RHOSE-4.18:rhcos-x86_64-418.94.202607211754-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:44230"
        },
        {
          "category": "workaround",
          "details": "This vulnerability can be mitigated by disabling nested virtualization. Create a file in `/etc/modprobe.d/` with a descriptive name, such as `cve-2026-53359-mitigation.conf`. In that file, disable nested virtualization for the `kvm_intel` and `kvm_amd` kernel modules:\n```\noptions kvm-intel nested=0\noptions kvm-amd nested=0\n```\n\nUse `lsmod` to determine if either module is already loaded. If so, remove loaded modules with `modprobe -r`. To validate that nested virtualization is disabled, read the files `/sys/module/kvm_intel/parameters/nested` and `/sys/module/kvm_amd/parameters/nested`. If these modules are loaded, those files should read `N` to indicate that the feature is disabled.\n\nIn OpenShift 4, a MachineConfig can be utilized to create a modprobe configuration allowing control of the module on applicable nodes. See the following article for an example.\n\nhttps://access.redhat.com/solutions/6979679",
          "product_ids": [
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          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
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            "9Base-RHOSE-4.18:rhcos-ppc64le-418.94.202607211754-0",
            "9Base-RHOSE-4.18:rhcos-s390x-418.94.202607211754-0",
            "9Base-RHOSE-4.18:rhcos-x86_64-418.94.202607211754-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected role"
    }
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        "text": "Red Hat OpenShift Container Platform release 4.19.40 is now available with\nupdates to packages and images that fix several bugs and add enhancements.\n\n This release includes a security update for Red Hat OpenShift Container\nPlatform 4.19.\n\nRed Hat Product Security has rated this update as having a security impact\nof Important. A Common Vulnerability Scoring System (CVSS) base score,\nwhich gives a detailed severity rating, is available for each vulnerability\nfrom the CVE link(s) in the References section.",
        "title": "Topic"
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      {
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        "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 4.19.40. See the following advisory for the RPM packages for this\nrelease:\n\nhttps://access.redhat.com/errata/RHBA-2026:44228\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/4.19/html/release_notes/\n\nSecurity Fix(es):\n\n* kernel: netfilter: flowtable: strictly check for maximum number of\nactions (CVE-2026-43329)\n* kernel: eventpoll: fix ep_remove struct eventpoll / struct file UAF\n(CVE-2026-46242)\n* kernel: KVM: arm64: vgic-its: Drop the translation cache reference only\nfor the erased entry (CVE-2026-46316)\n* kernel: Linux kernel: Use-After-Free in net/gro due to improper handling\nof zerocopy skbs (CVE-2026-46323)\n* kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected role\n(CVE-2026-53359)\n* openssl: openssl: Information Disclosure from Uninitialized Memory via\nInvalid RSA Public Key (CVE-2026-31790)\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 4.19 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/4.19/html-single/updating_clusters/index#updating-cluster-cli.",
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  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-31790",
      "cwe": {
        "id": "CWE-824",
        "name": "Access of Uninitialized Pointer"
      },
      "discovery_date": "2026-03-25T02:59:10.179000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2451094"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in openssl. Applications that use RSASVE key encapsulation, a method for securely exchanging encryption keys, may inadvertently expose sensitive data. This vulnerability arises when an application processes a malicious, invalid RSA public key provided by an attacker without proper validation. Consequently, the application might send the contents of an uninitialized memory buffer, which could contain confidential information, to the attacker.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "openssl: openssl: Information Disclosure from Uninitialized Memory via Invalid RSA Public Key",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Moderate impact. This flaw affects applications utilizing RSASVE key encapsulation, where an attacker-supplied invalid RSA public key is used with EVP_PKEY_encapsulate() without prior validation. This can lead to the disclosure of sensitive, uninitialized memory buffer contents to a malicious peer.",
          "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-4.19:rhcos-aarch64-4.19.9.6.202607220857-0",
          "9Base-RHOSE-4.19:rhcos-ppc64le-4.19.9.6.202607220857-0",
          "9Base-RHOSE-4.19:rhcos-s390x-4.19.9.6.202607220857-0",
          "9Base-RHOSE-4.19:rhcos-x86_64-4.19.9.6.202607220857-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-31790"
        },
        {
          "category": "external",
          "summary": "RHBZ#2451094",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451094"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-31790",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-31790"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-31790",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31790"
        },
        {
          "category": "external",
          "summary": "https://openssl-library.org/news/secadv/20260407.txt",
          "url": "https://openssl-library.org/news/secadv/20260407.txt"
        }
      ],
      "release_date": "2026-04-07T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-07-29T13:05:16+00:00",
          "details": "For OpenShift Container Platform 4.19 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/4.19/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64, s390x, ppc64le, and aarch64 architectures. The image digests\nmay be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:800712da0a4fa8353d0f94a06efa9e6a1479726b653b0d8ad1243f014d40f1bf\n\n      (For s390x architecture)\n      The image digest is sha256:4d0acc69187a33b0b10a3eeebbe7d60a7538e3c7a70e37054370f7b24b649349\n\n      (For ppc64le architecture)\n      The image digest is sha256:310602fabcd047776ecc3c52f82b03a56f4fbe79c1b052a5a6163a271f350227\n\n      (For aarch64 architecture)\n      The image digest is sha256:feeb5daa474f243df61a0e7043c8242bfdfbaa445ca5a22565bc8dcbe42aae93\n\nAll OpenShift Container Platform 4.19 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/4.19/html-single/updating_clusters/index#updating-cluster-cli.",
          "product_ids": [
            "9Base-RHOSE-4.19:rhcos-aarch64-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-ppc64le-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-s390x-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-x86_64-4.19.9.6.202607220857-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:44231"
        },
        {
          "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-4.19:rhcos-aarch64-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-ppc64le-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-s390x-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-x86_64-4.19.9.6.202607220857-0"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "9Base-RHOSE-4.19:rhcos-aarch64-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-ppc64le-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-s390x-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-x86_64-4.19.9.6.202607220857-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "openssl: openssl: Information Disclosure from Uninitialized Memory via Invalid RSA Public Key"
    },
    {
      "cve": "CVE-2026-43329",
      "cwe": {
        "id": "CWE-770",
        "name": "Allocation of Resources Without Limits or Throttling"
      },
      "discovery_date": "2026-05-08T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2468124"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the Netfilter flowtable component of the Linux kernel. This vulnerability occurs because the system does not strictly check the maximum number of hardware offload actions for IPv6, allowing it to process more actions than supported. This could potentially lead to system instability or a denial of service (DoS) condition, where the affected system becomes unresponsive.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: netfilter: flowtable: strictly check for maximum number of actions",
          "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-4.19:rhcos-aarch64-4.19.9.6.202607220857-0",
          "9Base-RHOSE-4.19:rhcos-ppc64le-4.19.9.6.202607220857-0",
          "9Base-RHOSE-4.19:rhcos-s390x-4.19.9.6.202607220857-0",
          "9Base-RHOSE-4.19:rhcos-x86_64-4.19.9.6.202607220857-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-43329"
        },
        {
          "category": "external",
          "summary": "RHBZ#2468124",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2468124"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-43329",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-43329"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-43329",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43329"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-43329.mbox",
          "url": "https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-43329.mbox"
        }
      ],
      "release_date": "2026-05-08T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-07-29T13:05:16+00:00",
          "details": "For OpenShift Container Platform 4.19 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/4.19/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64, s390x, ppc64le, and aarch64 architectures. The image digests\nmay be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:800712da0a4fa8353d0f94a06efa9e6a1479726b653b0d8ad1243f014d40f1bf\n\n      (For s390x architecture)\n      The image digest is sha256:4d0acc69187a33b0b10a3eeebbe7d60a7538e3c7a70e37054370f7b24b649349\n\n      (For ppc64le architecture)\n      The image digest is sha256:310602fabcd047776ecc3c52f82b03a56f4fbe79c1b052a5a6163a271f350227\n\n      (For aarch64 architecture)\n      The image digest is sha256:feeb5daa474f243df61a0e7043c8242bfdfbaa445ca5a22565bc8dcbe42aae93\n\nAll OpenShift Container Platform 4.19 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/4.19/html-single/updating_clusters/index#updating-cluster-cli.",
          "product_ids": [
            "9Base-RHOSE-4.19:rhcos-aarch64-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-ppc64le-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-s390x-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-x86_64-4.19.9.6.202607220857-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:44231"
        }
      ],
      "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-4.19:rhcos-aarch64-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-ppc64le-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-s390x-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-x86_64-4.19.9.6.202607220857-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: netfilter: flowtable: strictly check for maximum number of actions"
    },
    {
      "cve": "CVE-2026-46242",
      "cwe": {
        "id": "CWE-825",
        "name": "Expired Pointer Dereference"
      },
      "discovery_date": "2026-05-30T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2483519"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the Linux kernel\u0027s `eventpoll` mechanism. A Use-After-Free (UAF) vulnerability, where the system attempts to access memory after it has been freed, can occur during the removal of a file. A local attacker could exploit this race condition to corrupt memory, potentially leading to privilege escalation or arbitrary code execution. This allows an attacker to gain elevated control over the system.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: eventpoll: fix ep_remove struct eventpoll / struct file UAF",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "A race in eventpoll ep_remove() can let a concurrent file release observe a transient cleared file f_ep state and skip the normal eventpoll_release_file cleanup path. In the epoll watches epoll case this can free the watched struct eventpoll while ep_remove() still uses list pointers that refer into that freed object, so hlist_del_rcu() can write into freed kmalloc memory. This is a use-after-free memory corruption issue rather than a pure crash or resource leak. For the CVSS the AC:H is selected because reliable triggering depends on a race window between ep_remove() and __fput(). The issue is not network reachable. Impact is at least a local denial of service via kernel crash and in worst case may allow confidentiality, integrity, and availability compromise due to kernel heap memory corruption. Keeping Moderate with CVSS 7.0, but could be increased to the Important if reproducer becomes available that shows LPE possibility.\n\nRHEL 9.0 and 9.2 are not affected.",
          "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-4.19:rhcos-aarch64-4.19.9.6.202607220857-0",
          "9Base-RHOSE-4.19:rhcos-ppc64le-4.19.9.6.202607220857-0",
          "9Base-RHOSE-4.19:rhcos-s390x-4.19.9.6.202607220857-0",
          "9Base-RHOSE-4.19:rhcos-x86_64-4.19.9.6.202607220857-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-46242"
        },
        {
          "category": "external",
          "summary": "RHBZ#2483519",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2483519"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-46242",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-46242"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-46242",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46242"
        },
        {
          "category": "external",
          "summary": "https://lore.kernel.org/linux-cve-announce/2026053014-CVE-2026-46242-8394@gregkh/T",
          "url": "https://lore.kernel.org/linux-cve-announce/2026053014-CVE-2026-46242-8394@gregkh/T"
        }
      ],
      "release_date": "2026-05-30T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-07-29T13:05:16+00:00",
          "details": "For OpenShift Container Platform 4.19 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/4.19/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64, s390x, ppc64le, and aarch64 architectures. The image digests\nmay be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:800712da0a4fa8353d0f94a06efa9e6a1479726b653b0d8ad1243f014d40f1bf\n\n      (For s390x architecture)\n      The image digest is sha256:4d0acc69187a33b0b10a3eeebbe7d60a7538e3c7a70e37054370f7b24b649349\n\n      (For ppc64le architecture)\n      The image digest is sha256:310602fabcd047776ecc3c52f82b03a56f4fbe79c1b052a5a6163a271f350227\n\n      (For aarch64 architecture)\n      The image digest is sha256:feeb5daa474f243df61a0e7043c8242bfdfbaa445ca5a22565bc8dcbe42aae93\n\nAll OpenShift Container Platform 4.19 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/4.19/html-single/updating_clusters/index#updating-cluster-cli.",
          "product_ids": [
            "9Base-RHOSE-4.19:rhcos-aarch64-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-ppc64le-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-s390x-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-x86_64-4.19.9.6.202607220857-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:44231"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options don\u0027t meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
          "product_ids": [
            "9Base-RHOSE-4.19:rhcos-aarch64-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-ppc64le-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-s390x-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-x86_64-4.19.9.6.202607220857-0"
          ]
        }
      ],
      "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-4.19:rhcos-aarch64-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-ppc64le-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-s390x-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-x86_64-4.19.9.6.202607220857-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: eventpoll: fix ep_remove struct eventpoll / struct file UAF"
    },
    {
      "cve": "CVE-2026-46316",
      "cwe": {
        "id": "CWE-911",
        "name": "Improper Update of Reference Count"
      },
      "discovery_date": "2026-06-09T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2486982"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the Linux kernel\u0027s Kernel-based Virtual Machine (KVM) for ARM64, specifically within the vgic-its component. This vulnerability occurs when multiple concurrent operations incorrectly drop the translation cache\u0027s reference to an entry more than once during cache invalidation. This leads to a use-after-free condition, which can result in memory corruption. The primary impact is potential system instability or a denial of service.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: KVM: arm64: vgic-its: Drop the translation cache reference only for the erased entry",
          "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-4.19:rhcos-aarch64-4.19.9.6.202607220857-0",
          "9Base-RHOSE-4.19:rhcos-ppc64le-4.19.9.6.202607220857-0",
          "9Base-RHOSE-4.19:rhcos-s390x-4.19.9.6.202607220857-0",
          "9Base-RHOSE-4.19:rhcos-x86_64-4.19.9.6.202607220857-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-46316"
        },
        {
          "category": "external",
          "summary": "RHBZ#2486982",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2486982"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-46316",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-46316"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-46316",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46316"
        },
        {
          "category": "external",
          "summary": "https://lore.kernel.org/linux-cve-announce/2026060936-CVE-2026-46316-f761@gregkh/T",
          "url": "https://lore.kernel.org/linux-cve-announce/2026060936-CVE-2026-46316-f761@gregkh/T"
        },
        {
          "category": "external",
          "summary": "https://www.openwall.com/lists/oss-security/2026/06/10/16",
          "url": "https://www.openwall.com/lists/oss-security/2026/06/10/16"
        }
      ],
      "release_date": "2026-06-09T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-07-29T13:05:16+00:00",
          "details": "For OpenShift Container Platform 4.19 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/4.19/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64, s390x, ppc64le, and aarch64 architectures. The image digests\nmay be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:800712da0a4fa8353d0f94a06efa9e6a1479726b653b0d8ad1243f014d40f1bf\n\n      (For s390x architecture)\n      The image digest is sha256:4d0acc69187a33b0b10a3eeebbe7d60a7538e3c7a70e37054370f7b24b649349\n\n      (For ppc64le architecture)\n      The image digest is sha256:310602fabcd047776ecc3c52f82b03a56f4fbe79c1b052a5a6163a271f350227\n\n      (For aarch64 architecture)\n      The image digest is sha256:feeb5daa474f243df61a0e7043c8242bfdfbaa445ca5a22565bc8dcbe42aae93\n\nAll OpenShift Container Platform 4.19 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/4.19/html-single/updating_clusters/index#updating-cluster-cli.",
          "product_ids": [
            "9Base-RHOSE-4.19:rhcos-aarch64-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-ppc64le-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-s390x-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-x86_64-4.19.9.6.202607220857-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:44231"
        }
      ],
      "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-4.19:rhcos-aarch64-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-ppc64le-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-s390x-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-x86_64-4.19.9.6.202607220857-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: KVM: arm64: vgic-its: Drop the translation cache reference only for the erased entry"
    },
    {
      "cve": "CVE-2026-46323",
      "cwe": {
        "id": "CWE-123",
        "name": "Write-what-where Condition"
      },
      "discovery_date": "2026-05-19T11:49:44.372000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2479832"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the Linux kernel\u0027s Generic Receive Offload (GRO) networking subsystem. This vulnerability occurs when `skb_gro_receive()` attempts to merge zerocopy socket buffers (skbs) without properly managing page reference counts, specifically when the `SKBFL_MANAGED_FRAG_REFS` flag is set. An attacker could potentially exploit this to trigger a Use-After-Free (UAF) condition, which is a memory corruption vulnerability that can lead to system instability or potentially arbitrary code execution.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: Linux kernel: Use-After-Free in net/gro due to improper handling of zerocopy skbs",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This is an Important flaw in the Linux kernel\u0027s Generic Receive Offload (GRO) networking subsystem. The vulnerability, a variant of Fragnesia, stems from improper management of page reference counts when merging zerocopy socket buffers. An attacker could exploit this Use-After-Free condition to achieve arbitrary code execution or cause system instability on affected Red Hat Enterprise Linux and OpenShift Container Platform 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": [
          "9Base-RHOSE-4.19:rhcos-aarch64-4.19.9.6.202607220857-0",
          "9Base-RHOSE-4.19:rhcos-ppc64le-4.19.9.6.202607220857-0",
          "9Base-RHOSE-4.19:rhcos-s390x-4.19.9.6.202607220857-0",
          "9Base-RHOSE-4.19:rhcos-x86_64-4.19.9.6.202607220857-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-46323"
        },
        {
          "category": "external",
          "summary": "RHBZ#2479832",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2479832"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-46323",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-46323"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-46323",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46323"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=1f9c828556416fbe3f49386708ce999fc4d4da06",
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=1f9c828556416fbe3f49386708ce999fc4d4da06"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=44bea2032af0425e4ce6d26a8af0ede79db49ec1",
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=44bea2032af0425e4ce6d26a8af0ede79db49ec1"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=479084ae0e1d9cb7929cb4298d35623de189f80a",
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=479084ae0e1d9cb7929cb4298d35623de189f80a"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=4db79a322db8c97f7b73b8a347395ef4d685eb40",
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=4db79a322db8c97f7b73b8a347395ef4d685eb40"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=e334cbf3388fd9334503a778a82d9e9f14dd2f71",
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=e334cbf3388fd9334503a778a82d9e9f14dd2f71"
        },
        {
          "category": "external",
          "summary": "https://lore.kernel.org/netdev/4d583fc5401298453d0a2f1b4719a15be30c8e49.1779194090.git.sd@queasysnail.net/",
          "url": "https://lore.kernel.org/netdev/4d583fc5401298453d0a2f1b4719a15be30c8e49.1779194090.git.sd@queasysnail.net/"
        },
        {
          "category": "external",
          "summary": "https://lore.kernel.org/netdev/agVpIsaSherjHTYg@sultan-box/",
          "url": "https://lore.kernel.org/netdev/agVpIsaSherjHTYg@sultan-box/"
        }
      ],
      "release_date": "2026-05-19T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-07-29T13:05:16+00:00",
          "details": "For OpenShift Container Platform 4.19 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/4.19/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64, s390x, ppc64le, and aarch64 architectures. The image digests\nmay be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:800712da0a4fa8353d0f94a06efa9e6a1479726b653b0d8ad1243f014d40f1bf\n\n      (For s390x architecture)\n      The image digest is sha256:4d0acc69187a33b0b10a3eeebbe7d60a7538e3c7a70e37054370f7b24b649349\n\n      (For ppc64le architecture)\n      The image digest is sha256:310602fabcd047776ecc3c52f82b03a56f4fbe79c1b052a5a6163a271f350227\n\n      (For aarch64 architecture)\n      The image digest is sha256:feeb5daa474f243df61a0e7043c8242bfdfbaa445ca5a22565bc8dcbe42aae93\n\nAll OpenShift Container Platform 4.19 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/4.19/html-single/updating_clusters/index#updating-cluster-cli.",
          "product_ids": [
            "9Base-RHOSE-4.19:rhcos-aarch64-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-ppc64le-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-s390x-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-x86_64-4.19.9.6.202607220857-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:44231"
        },
        {
          "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-4.19:rhcos-aarch64-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-ppc64le-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-s390x-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-x86_64-4.19.9.6.202607220857-0"
          ]
        }
      ],
      "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-4.19:rhcos-aarch64-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-ppc64le-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-s390x-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-x86_64-4.19.9.6.202607220857-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: Linux kernel: Use-After-Free in net/gro due to improper handling of zerocopy skbs"
    },
    {
      "cve": "CVE-2026-53359",
      "cwe": {
        "id": "CWE-825",
        "name": "Expired Pointer Dereference"
      },
      "discovery_date": "2026-07-04T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2497033"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the Linux kernel\u0027s Kernel-based Virtual Machine (KVM) x86 shadow paging mechanism. This vulnerability occurs when a host page directory entry (PDE) mapping is changed from within the guest, leading to an unexpected role mismatch in shadow paging. This mismatch can cause a use-after-free condition, where the system attempts to access memory that has already been released. Such a condition can lead to system instability, denial of service, potentially the execution of arbitrary code or guest-to-host escape.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected role",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This is an Important flaw in the KVM x86 shadow paging mechanism where an attacker with privileged access inside the guest VM could trigger a use-after-free condition by manipulating page directory entries on the host. This could lead to system instability, denial of service, or potentially arbitrary code execution on the host.\n\nIn Red Hat Enterprise Linux 7, nested virtualization for KVM is a Technology Preview feature and the nested parameter defaults to 0 (disabled) for both kvm_intel and kvm_amd.",
          "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-4.19:rhcos-aarch64-4.19.9.6.202607220857-0",
          "9Base-RHOSE-4.19:rhcos-ppc64le-4.19.9.6.202607220857-0",
          "9Base-RHOSE-4.19:rhcos-s390x-4.19.9.6.202607220857-0",
          "9Base-RHOSE-4.19:rhcos-x86_64-4.19.9.6.202607220857-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-53359"
        },
        {
          "category": "external",
          "summary": "RHBZ#2497033",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2497033"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-53359",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-53359"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-53359",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53359"
        },
        {
          "category": "external",
          "summary": "https://lore.kernel.org/linux-cve-announce/2026070403-CVE-2026-53359-4f57@gregkh/T",
          "url": "https://lore.kernel.org/linux-cve-announce/2026070403-CVE-2026-53359-4f57@gregkh/T"
        },
        {
          "category": "external",
          "summary": "https://www.openwall.com/lists/oss-security/2026/07/06/7",
          "url": "https://www.openwall.com/lists/oss-security/2026/07/06/7"
        }
      ],
      "release_date": "2026-07-04T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-07-29T13:05:16+00:00",
          "details": "For OpenShift Container Platform 4.19 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/4.19/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64, s390x, ppc64le, and aarch64 architectures. The image digests\nmay be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:800712da0a4fa8353d0f94a06efa9e6a1479726b653b0d8ad1243f014d40f1bf\n\n      (For s390x architecture)\n      The image digest is sha256:4d0acc69187a33b0b10a3eeebbe7d60a7538e3c7a70e37054370f7b24b649349\n\n      (For ppc64le architecture)\n      The image digest is sha256:310602fabcd047776ecc3c52f82b03a56f4fbe79c1b052a5a6163a271f350227\n\n      (For aarch64 architecture)\n      The image digest is sha256:feeb5daa474f243df61a0e7043c8242bfdfbaa445ca5a22565bc8dcbe42aae93\n\nAll OpenShift Container Platform 4.19 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/4.19/html-single/updating_clusters/index#updating-cluster-cli.",
          "product_ids": [
            "9Base-RHOSE-4.19:rhcos-aarch64-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-ppc64le-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-s390x-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-x86_64-4.19.9.6.202607220857-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:44231"
        },
        {
          "category": "workaround",
          "details": "This vulnerability can be mitigated by disabling nested virtualization. Create a file in `/etc/modprobe.d/` with a descriptive name, such as `cve-2026-53359-mitigation.conf`. In that file, disable nested virtualization for the `kvm_intel` and `kvm_amd` kernel modules:\n```\noptions kvm-intel nested=0\noptions kvm-amd nested=0\n```\n\nUse `lsmod` to determine if either module is already loaded. If so, remove loaded modules with `modprobe -r`. To validate that nested virtualization is disabled, read the files `/sys/module/kvm_intel/parameters/nested` and `/sys/module/kvm_amd/parameters/nested`. If these modules are loaded, those files should read `N` to indicate that the feature is disabled.\n\nIn OpenShift 4, a MachineConfig can be utilized to create a modprobe configuration allowing control of the module on applicable nodes. See the following article for an example.\n\nhttps://access.redhat.com/solutions/6979679",
          "product_ids": [
            "9Base-RHOSE-4.19:rhcos-aarch64-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-ppc64le-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-s390x-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-x86_64-4.19.9.6.202607220857-0"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "9Base-RHOSE-4.19:rhcos-aarch64-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-ppc64le-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-s390x-4.19.9.6.202607220857-0",
            "9Base-RHOSE-4.19:rhcos-x86_64-4.19.9.6.202607220857-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected role"
    }
  ]
}

{
  "document": {
    "aggregate_severity": {
      "namespace": "https://access.redhat.com/security/updates/classification/",
      "text": "Important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
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    "lang": "en",
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      {
        "category": "summary",
        "text": "Red Hat OpenShift Container Platform release 4.20.31 is now available with updates to packages and images that fix several bugs and add enhancements.\n\nThis release includes a security update for Red Hat OpenShift Container Platform 4.20.\n\nRed Hat Product Security has rated this update as having a security impact of Important. 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.",
        "title": "Topic"
      },
      {
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        "text": "Red Hat OpenShift Container Platform is Red Hat\u0027s cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments.\n\nThis advisory contains the container images for Red Hat OpenShift Container Platform 4.20.31. See the following advisory for the RPM packages for this release:\n\nhttps://access.redhat.com/errata/RHBA-2026:44258\n\nSpace 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:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.20/html/release_notes/\n\nSecurity Fix(es):\n\n* kernel: netfilter: flowtable: strictly check for maximum number of actions (CVE-2026-43329)\n* kernel: Linux kernel: Use-After-Free in net/gro due to improper handling of zerocopy skbs (CVE-2026-46323)\n\nFor 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.\n\nAll OpenShift Container Platform 4.20 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/4.20/html-single/updating_clusters/index#updating-cluster-cli.",
        "title": "Details"
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        "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.",
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    "title": "Red Hat Security Advisory: OpenShift Container Platform 4.20.31 bug fix and security update",
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      "ids": [
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          "text": "2468124"
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        {
          "category": "description",
          "text": "A flaw was found in the Netfilter flowtable component of the Linux kernel. This vulnerability occurs because the system does not strictly check the maximum number of hardware offload actions for IPv6, allowing it to process more actions than supported. This could potentially lead to system instability or a denial of service (DoS) condition, where the affected system becomes unresponsive.",
          "title": "Vulnerability description"
        },
        {
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          "text": "kernel: netfilter: flowtable: strictly check for maximum number of actions",
          "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"
        }
      ],
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          "9Base-RHOSE-4.20:rhcos-s390x-4.20.9.6.202607221038-0",
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      "references": [
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          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-43329"
        },
        {
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          "summary": "RHBZ#2468124",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2468124"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-43329",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-43329"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-43329",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43329"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-43329.mbox",
          "url": "https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-43329.mbox"
        }
      ],
      "release_date": "2026-05-08T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-07-28T12:57:13+00:00",
          "details": "For OpenShift Container Platform 4.20 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.20/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:c71adce4fdc09a3629f2867619aa255a1ee4b8e1e2a4c2183a2e4186055d32c9\n\n      (For s390x architecture)\n      The image digest is sha256:fdc3c5b3428faae581d89fc63d580858f5dac05dc6f7a569d7e9a180f90c0577\n\n      (For ppc64le architecture)\n      The image digest is sha256:f08f7a80bfecab89cef342c269b1e85df53821522b70933c7d621978668218eb\n\n      (For aarch64 architecture)\n      The image digest is sha256:d5ab19e45d2051a0158796083ab2978237ce382ac36a02b06ac92c63487cf5e1\n\nAll OpenShift Container Platform 4.20 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/4.20/html-single/updating_clusters/index#updating-cluster-cli.",
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            "9Base-RHOSE-4.20:rhcos-x86_64-4.20.9.6.202607221038-0"
          ],
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          "url": "https://access.redhat.com/errata/RHSA-2026:44259"
        }
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      "scores": [
        {
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            "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": [
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            "9Base-RHOSE-4.20:rhcos-ppc64le-4.20.9.6.202607221038-0",
            "9Base-RHOSE-4.20:rhcos-s390x-4.20.9.6.202607221038-0",
            "9Base-RHOSE-4.20:rhcos-x86_64-4.20.9.6.202607221038-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: netfilter: flowtable: strictly check for maximum number of actions"
    },
    {
      "cve": "CVE-2026-46323",
      "cwe": {
        "id": "CWE-123",
        "name": "Write-what-where Condition"
      },
      "discovery_date": "2026-05-19T11:49:44.372000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2479832"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the Linux kernel\u0027s Generic Receive Offload (GRO) networking subsystem. This vulnerability occurs when `skb_gro_receive()` attempts to merge zerocopy socket buffers (skbs) without properly managing page reference counts, specifically when the `SKBFL_MANAGED_FRAG_REFS` flag is set. An attacker could potentially exploit this to trigger a Use-After-Free (UAF) condition, which is a memory corruption vulnerability that can lead to system instability or potentially arbitrary code execution.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: Linux kernel: Use-After-Free in net/gro due to improper handling of zerocopy skbs",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This is an Important flaw in the Linux kernel\u0027s Generic Receive Offload (GRO) networking subsystem. The vulnerability, a variant of Fragnesia, stems from improper management of page reference counts when merging zerocopy socket buffers. An attacker could exploit this Use-After-Free condition to achieve arbitrary code execution or cause system instability on affected Red Hat Enterprise Linux and OpenShift Container Platform 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": {
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        },
        {
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          "summary": "RHBZ#2479832",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2479832"
        },
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          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-46323",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-46323"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-46323",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46323"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=1f9c828556416fbe3f49386708ce999fc4d4da06",
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        },
        {
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          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=4db79a322db8c97f7b73b8a347395ef4d685eb40",
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          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=e334cbf3388fd9334503a778a82d9e9f14dd2f71",
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          "date": "2026-07-28T12:57:13+00:00",
          "details": "For OpenShift Container Platform 4.20 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.20/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:c71adce4fdc09a3629f2867619aa255a1ee4b8e1e2a4c2183a2e4186055d32c9\n\n      (For s390x architecture)\n      The image digest is sha256:fdc3c5b3428faae581d89fc63d580858f5dac05dc6f7a569d7e9a180f90c0577\n\n      (For ppc64le architecture)\n      The image digest is sha256:f08f7a80bfecab89cef342c269b1e85df53821522b70933c7d621978668218eb\n\n      (For aarch64 architecture)\n      The image digest is sha256:d5ab19e45d2051a0158796083ab2978237ce382ac36a02b06ac92c63487cf5e1\n\nAll OpenShift Container Platform 4.20 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/4.20/html-single/updating_clusters/index#updating-cluster-cli.",
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        "text": "Red Hat OpenShift Container Platform release 4.21.26 is now available with updates to packages and images that fix several bugs and add enhancements.\n\nThis release includes a security update for Red Hat OpenShift Container Platform 4.21.\n\nRed Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.",
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      },
      "discovery_date": "2026-05-08T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2468124"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the Netfilter flowtable component of the Linux kernel. This vulnerability occurs because the system does not strictly check the maximum number of hardware offload actions for IPv6, allowing it to process more actions than supported. This could potentially lead to system instability or a denial of service (DoS) condition, where the affected system becomes unresponsive.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: netfilter: flowtable: strictly check for maximum number of actions",
          "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": [
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          "9Base-RHOSE-4.21:rhcos-ppc64le-4.21.9.6.202607221317-0",
          "9Base-RHOSE-4.21:rhcos-s390x-4.21.9.6.202607221317-0",
          "9Base-RHOSE-4.21:rhcos-x86_64-4.21.9.6.202607221317-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-43329"
        },
        {
          "category": "external",
          "summary": "RHBZ#2468124",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2468124"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-43329",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-43329"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-43329",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43329"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-43329.mbox",
          "url": "https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-43329.mbox"
        }
      ],
      "release_date": "2026-05-08T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-07-28T13:49:43+00:00",
          "details": "For OpenShift Container Platform 4.21 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.21/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:683c4a4eed9c4005b7d331fe0e55b5f943b1d57f40f4d4b77f059f52ad127092\n\n      (For s390x architecture)\n      The image digest is sha256:833db4fb867ab91de6d9ab729ea789dd63266d4c7f8f07d0f30db81dc7455ae2\n\n      (For ppc64le architecture)\n      The image digest is sha256:ad63928ee4b665e025e06412fbda3052477b60883884d9d113e82d98f59232fa\n\n      (For aarch64 architecture)\n      The image digest is sha256:4e8106973e1d6196e9a28658cc11ad066f2cc9423bf2bc3d30bfd9f3058f2ee8\n\nAll OpenShift Container Platform 4.21 users are advised to upgrade to theseupdated 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/4.21/html-single/updating_clusters/index# pdating-cluster-cli.",
          "product_ids": [
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            "9Base-RHOSE-4.21:rhcos-ppc64le-4.21.9.6.202607221317-0",
            "9Base-RHOSE-4.21:rhcos-s390x-4.21.9.6.202607221317-0",
            "9Base-RHOSE-4.21:rhcos-x86_64-4.21.9.6.202607221317-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:44262"
        }
      ],
      "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-4.21:rhcos-aarch64-4.21.9.6.202607221317-0",
            "9Base-RHOSE-4.21:rhcos-ppc64le-4.21.9.6.202607221317-0",
            "9Base-RHOSE-4.21:rhcos-s390x-4.21.9.6.202607221317-0",
            "9Base-RHOSE-4.21:rhcos-x86_64-4.21.9.6.202607221317-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: netfilter: flowtable: strictly check for maximum number of actions"
    },
    {
      "cve": "CVE-2026-46323",
      "cwe": {
        "id": "CWE-123",
        "name": "Write-what-where Condition"
      },
      "discovery_date": "2026-05-19T11:49:44.372000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2479832"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the Linux kernel\u0027s Generic Receive Offload (GRO) networking subsystem. This vulnerability occurs when `skb_gro_receive()` attempts to merge zerocopy socket buffers (skbs) without properly managing page reference counts, specifically when the `SKBFL_MANAGED_FRAG_REFS` flag is set. An attacker could potentially exploit this to trigger a Use-After-Free (UAF) condition, which is a memory corruption vulnerability that can lead to system instability or potentially arbitrary code execution.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: Linux kernel: Use-After-Free in net/gro due to improper handling of zerocopy skbs",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This is an Important flaw in the Linux kernel\u0027s Generic Receive Offload (GRO) networking subsystem. The vulnerability, a variant of Fragnesia, stems from improper management of page reference counts when merging zerocopy socket buffers. An attacker could exploit this Use-After-Free condition to achieve arbitrary code execution or cause system instability on affected Red Hat Enterprise Linux and OpenShift Container Platform 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": [
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          "9Base-RHOSE-4.21:rhcos-ppc64le-4.21.9.6.202607221317-0",
          "9Base-RHOSE-4.21:rhcos-s390x-4.21.9.6.202607221317-0",
          "9Base-RHOSE-4.21:rhcos-x86_64-4.21.9.6.202607221317-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-46323"
        },
        {
          "category": "external",
          "summary": "RHBZ#2479832",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2479832"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-46323",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-46323"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-46323",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46323"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=1f9c828556416fbe3f49386708ce999fc4d4da06",
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=1f9c828556416fbe3f49386708ce999fc4d4da06"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=44bea2032af0425e4ce6d26a8af0ede79db49ec1",
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=44bea2032af0425e4ce6d26a8af0ede79db49ec1"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=479084ae0e1d9cb7929cb4298d35623de189f80a",
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=479084ae0e1d9cb7929cb4298d35623de189f80a"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=4db79a322db8c97f7b73b8a347395ef4d685eb40",
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=4db79a322db8c97f7b73b8a347395ef4d685eb40"
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        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=e334cbf3388fd9334503a778a82d9e9f14dd2f71",
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          "summary": "https://lore.kernel.org/netdev/4d583fc5401298453d0a2f1b4719a15be30c8e49.1779194090.git.sd@queasysnail.net/",
          "url": "https://lore.kernel.org/netdev/4d583fc5401298453d0a2f1b4719a15be30c8e49.1779194090.git.sd@queasysnail.net/"
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        {
          "category": "external",
          "summary": "https://lore.kernel.org/netdev/agVpIsaSherjHTYg@sultan-box/",
          "url": "https://lore.kernel.org/netdev/agVpIsaSherjHTYg@sultan-box/"
        }
      ],
      "release_date": "2026-05-19T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-07-28T13:49:43+00:00",
          "details": "For OpenShift Container Platform 4.21 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.21/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:683c4a4eed9c4005b7d331fe0e55b5f943b1d57f40f4d4b77f059f52ad127092\n\n      (For s390x architecture)\n      The image digest is sha256:833db4fb867ab91de6d9ab729ea789dd63266d4c7f8f07d0f30db81dc7455ae2\n\n      (For ppc64le architecture)\n      The image digest is sha256:ad63928ee4b665e025e06412fbda3052477b60883884d9d113e82d98f59232fa\n\n      (For aarch64 architecture)\n      The image digest is sha256:4e8106973e1d6196e9a28658cc11ad066f2cc9423bf2bc3d30bfd9f3058f2ee8\n\nAll OpenShift Container Platform 4.21 users are advised to upgrade to theseupdated 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/4.21/html-single/updating_clusters/index# pdating-cluster-cli.",
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            "9Base-RHOSE-4.21:rhcos-ppc64le-4.21.9.6.202607221317-0",
            "9Base-RHOSE-4.21:rhcos-s390x-4.21.9.6.202607221317-0",
            "9Base-RHOSE-4.21:rhcos-x86_64-4.21.9.6.202607221317-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:44262"
        },
        {
          "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": [
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            "9Base-RHOSE-4.21:rhcos-ppc64le-4.21.9.6.202607221317-0",
            "9Base-RHOSE-4.21:rhcos-s390x-4.21.9.6.202607221317-0",
            "9Base-RHOSE-4.21:rhcos-x86_64-4.21.9.6.202607221317-0"
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        }
      ],
      "scores": [
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            "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"
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          "products": [
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            "9Base-RHOSE-4.21:rhcos-ppc64le-4.21.9.6.202607221317-0",
            "9Base-RHOSE-4.21:rhcos-s390x-4.21.9.6.202607221317-0",
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        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: Linux kernel: Use-After-Free in net/gro due to improper handling of zerocopy skbs"
    }
  ]
}

{
  "document": {
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    "category": "csaf_security_advisory",
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      "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
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        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
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      {
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        "text": "Red Hat OpenShift Container Platform release 4.12.95 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 4.12.95. See the following advisory for the RPM packages for this\nrelease:\n\nhttps://access.redhat.com/errata/RHBA-2026:47701\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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      {
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        "summary": "2468124",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2468124"
      },
      {
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        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_47702.json"
      }
    ],
    "title": "Red Hat Security Advisory: OpenShift Container Platform 4.12.95 bug fix and security update",
    "tracking": {
      "current_release_date": "2026-08-19T20:51:04+00:00",
      "generator": {
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  "vulnerabilities": [
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        "name": "Allocation of Resources Without Limits or Throttling"
      },
      "discovery_date": "2026-05-08T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2468124"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the Netfilter flowtable component of the Linux kernel. This vulnerability occurs because the system does not strictly check the maximum number of hardware offload actions for IPv6, allowing it to process more actions than supported. This could potentially lead to system instability or a denial of service (DoS) condition, where the affected system becomes unresponsive.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: netfilter: flowtable: strictly check for maximum number of actions",
          "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": {
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        ]
      },
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          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-43329"
        },
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          "summary": "RHBZ#2468124",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2468124"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-43329",
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        },
        {
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          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43329"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-43329.mbox",
          "url": "https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-43329.mbox"
        }
      ],
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      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-08-06T09:43:36+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 sha256:7c196c53350705a178672825ab9582d73bd37701c6d9ed7ea3367c19fe189ddc\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": [
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          ],
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            "category": "none"
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          "url": "https://access.redhat.com/errata/RHSA-2026:47702"
        }
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      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
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            "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": [
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        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: netfilter: flowtable: strictly check for maximum number of actions"
    }
  ]
}

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    "distribution": {
      "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
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        "text": "Red Hat OpenShift Container Platform release 4.17.56 is now available with\nupdates to packages and images that fix several bugs and add enhancements.\n\n This release includes a security update for Red Hat OpenShift Container\nPlatform 4.17.\n\nRed Hat Product Security has rated this update as having a security impact\nof Important. A Common Vulnerability Scoring System (CVSS) base score,\nwhich gives a detailed severity rating, is available for each vulnerability\nfrom the 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 4.17.56. See the following advisory for the RPM packages for this\nrelease:\n\nhttps://access.redhat.com/errata/RHBA-2026:47726\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/4.17/html/release_notes/\n\nSecurity Fix(es):\n\n* kernel: netfilter: flowtable: strictly check for maximum number of\nactions (CVE-2026-43329)\n* kernel: Linux kernel: smb: client: reject userspace cifs.spnego\ndescriptions (CVE-2026-46243)\n* kernel: Linux kernel: Use-After-Free in net/gro due to improper handling\nof zerocopy skbs (CVE-2026-46323)\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 4.17 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/4.17/html-single/updating_clusters/index#updating-cluster-cli.",
        "title": "Details"
      },
      {
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        "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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            ],
            "category": "architecture",
            "name": "x86_64"
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rhcos-aarch64-417.94.202607240132-0 as a component of Red Hat OpenShift Container Platform 4.17",
          "product_id": "9Base-RHOSE-4.17:rhcos-aarch64-417.94.202607240132-0"
        },
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        },
        "product_reference": "rhcos-ppc64le-417.94.202607240132-0",
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        "relates_to_product_reference": "9Base-RHOSE-4.17"
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  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-43329",
      "cwe": {
        "id": "CWE-770",
        "name": "Allocation of Resources Without Limits or Throttling"
      },
      "discovery_date": "2026-05-08T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2468124"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the Netfilter flowtable component of the Linux kernel. This vulnerability occurs because the system does not strictly check the maximum number of hardware offload actions for IPv6, allowing it to process more actions than supported. This could potentially lead to system instability or a denial of service (DoS) condition, where the affected system becomes unresponsive.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: netfilter: flowtable: strictly check for maximum number of actions",
          "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-4.17:rhcos-aarch64-417.94.202607240132-0",
          "9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202607240132-0",
          "9Base-RHOSE-4.17:rhcos-s390x-417.94.202607240132-0",
          "9Base-RHOSE-4.17:rhcos-x86_64-417.94.202607240132-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-43329"
        },
        {
          "category": "external",
          "summary": "RHBZ#2468124",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2468124"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-43329",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-43329"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-43329",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43329"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-43329.mbox",
          "url": "https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-43329.mbox"
        }
      ],
      "release_date": "2026-05-08T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-08-06T14:57:32+00:00",
          "details": "For OpenShift Container Platform 4.17 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/4.17/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64, s390x, ppc64le, and aarch64 architectures. The image digests\nmay be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:424acee89e2db0e1be3213da3db28967da2c61fcf2830ee8f83f51a48d973394\n\n      (For s390x architecture)\n      The image digest is sha256:20b10e83cd8ee11260ba13f3350e5434e34d312bdc36f6a623e1993be929885d\n\n      (For ppc64le architecture)\n      The image digest is sha256:55b9233eebf35c2e83ace7eb9498a39506374e1383a4894cb5f2d975a4f2ca65\n\n      (For aarch64 architecture)\n      The image digest is sha256:b448c5f0dbce94c2a8cafacbb73c3839970666a4140ea38fdab1b0db7fa2e005\n\nAll OpenShift Container Platform 4.17 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/4.17/html-single/updating_clusters/index#updating-cluster-cli.",
          "product_ids": [
            "9Base-RHOSE-4.17:rhcos-aarch64-417.94.202607240132-0",
            "9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202607240132-0",
            "9Base-RHOSE-4.17:rhcos-s390x-417.94.202607240132-0",
            "9Base-RHOSE-4.17:rhcos-x86_64-417.94.202607240132-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:47727"
        }
      ],
      "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-4.17:rhcos-aarch64-417.94.202607240132-0",
            "9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202607240132-0",
            "9Base-RHOSE-4.17:rhcos-s390x-417.94.202607240132-0",
            "9Base-RHOSE-4.17:rhcos-x86_64-417.94.202607240132-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: netfilter: flowtable: strictly check for maximum number of actions"
    },
    {
      "cve": "CVE-2026-46243",
      "cwe": {
        "id": "CWE-825",
        "name": "Expired Pointer Dereference"
      },
      "discovery_date": "2026-05-26T15:07:49.955000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2481486"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A privilege escalation vulnerability was found in the Linux kernel\u0027s CIFS client implementation. This could allow a local attacker to impersonate other users, bypass authentication in SMB mount operations, and potentially gain unauthorized access to network file shares or escalate privileges.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: Linux kernel: smb: client: reject userspace cifs.spnego descriptions",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This issue is classified as Important severity primarily because a low-privileged local user can achieve full privilege escalation to root without any user interaction. The attack requires local access, which prevents remote exploitation and is the primary factor keeping the rating at Important rather than Critical.\n\nExploitation requires three components to be present on the system: the `cifs` kernel module (loaded or loadable), the `cifs-utils` package with its default `cifs.spnego` request-key rule, and the ability to create unprivileged user and mount namespaces. All three must be present for the attack chain to succeed. Environments that do not use SMB/CIFS file shares or Active Directory integration are unlikely to have `cifs-utils` installed, reducing their exposure.\n\nIn OpenShift Container Platform 4, this flaw is rated Low. The default `restricted-v2` Security Context Constraint (SCC) sets `allowPrivilegeEscalation: false` on all pods, which causes the kernel to ignore setuid file bits, preventing privilege escalation. Under non-default SCCs such as `anyuid` that permit privilege escalation, the vulnerability is constrained by PID and mount namespace isolation to the container\u0027s own filesystem. An attacker would only be able to escalate privileges within the container, not on the host or across pods.",
          "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-4.17:rhcos-aarch64-417.94.202607240132-0",
          "9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202607240132-0",
          "9Base-RHOSE-4.17:rhcos-s390x-417.94.202607240132-0",
          "9Base-RHOSE-4.17:rhcos-x86_64-417.94.202607240132-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-46243"
        },
        {
          "category": "external",
          "summary": "RHBZ#2481486",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2481486"
        },
        {
          "category": "external",
          "summary": "RHSB-2026-005",
          "url": "https://access.redhat.com/security/vulnerabilities/RHSB-2026-005"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-46243",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-46243"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-46243",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46243"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3da1fdf4efbc490041eb4f836bf596201203f8f2",
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3da1fdf4efbc490041eb4f836bf596201203f8f2"
        },
        {
          "category": "external",
          "summary": "https://lore.kernel.org/linux-cve-announce/2026060140-CVE-2026-46243-3d1c@gregkh/",
          "url": "https://lore.kernel.org/linux-cve-announce/2026060140-CVE-2026-46243-3d1c@gregkh/"
        }
      ],
      "release_date": "2026-05-26T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-08-06T14:57:32+00:00",
          "details": "For OpenShift Container Platform 4.17 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/4.17/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64, s390x, ppc64le, and aarch64 architectures. The image digests\nmay be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:424acee89e2db0e1be3213da3db28967da2c61fcf2830ee8f83f51a48d973394\n\n      (For s390x architecture)\n      The image digest is sha256:20b10e83cd8ee11260ba13f3350e5434e34d312bdc36f6a623e1993be929885d\n\n      (For ppc64le architecture)\n      The image digest is sha256:55b9233eebf35c2e83ace7eb9498a39506374e1383a4894cb5f2d975a4f2ca65\n\n      (For aarch64 architecture)\n      The image digest is sha256:b448c5f0dbce94c2a8cafacbb73c3839970666a4140ea38fdab1b0db7fa2e005\n\nAll OpenShift Container Platform 4.17 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/4.17/html-single/updating_clusters/index#updating-cluster-cli.",
          "product_ids": [
            "9Base-RHOSE-4.17:rhcos-aarch64-417.94.202607240132-0",
            "9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202607240132-0",
            "9Base-RHOSE-4.17:rhcos-s390x-417.94.202607240132-0",
            "9Base-RHOSE-4.17:rhcos-x86_64-417.94.202607240132-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:47727"
        },
        {
          "category": "workaround",
          "details": "See the security bulletin for a detailed mitigation procedure.",
          "product_ids": [
            "9Base-RHOSE-4.17:rhcos-aarch64-417.94.202607240132-0",
            "9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202607240132-0",
            "9Base-RHOSE-4.17:rhcos-s390x-417.94.202607240132-0",
            "9Base-RHOSE-4.17:rhcos-x86_64-417.94.202607240132-0"
          ]
        }
      ],
      "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-4.17:rhcos-aarch64-417.94.202607240132-0",
            "9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202607240132-0",
            "9Base-RHOSE-4.17:rhcos-s390x-417.94.202607240132-0",
            "9Base-RHOSE-4.17:rhcos-x86_64-417.94.202607240132-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Low"
        }
      ],
      "title": "kernel: Linux kernel: smb: client: reject userspace cifs.spnego descriptions"
    },
    {
      "cve": "CVE-2026-46323",
      "cwe": {
        "id": "CWE-123",
        "name": "Write-what-where Condition"
      },
      "discovery_date": "2026-05-19T11:49:44.372000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2479832"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the Linux kernel\u0027s Generic Receive Offload (GRO) networking subsystem. This vulnerability occurs when `skb_gro_receive()` attempts to merge zerocopy socket buffers (skbs) without properly managing page reference counts, specifically when the `SKBFL_MANAGED_FRAG_REFS` flag is set. An attacker could potentially exploit this to trigger a Use-After-Free (UAF) condition, which is a memory corruption vulnerability that can lead to system instability or potentially arbitrary code execution.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: Linux kernel: Use-After-Free in net/gro due to improper handling of zerocopy skbs",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This is an Important flaw in the Linux kernel\u0027s Generic Receive Offload (GRO) networking subsystem. The vulnerability, a variant of Fragnesia, stems from improper management of page reference counts when merging zerocopy socket buffers. An attacker could exploit this Use-After-Free condition to achieve arbitrary code execution or cause system instability on affected Red Hat Enterprise Linux and OpenShift Container Platform 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": [
          "9Base-RHOSE-4.17:rhcos-aarch64-417.94.202607240132-0",
          "9Base-RHOSE-4.17:rhcos-ppc64le-417.94.202607240132-0",
          "9Base-RHOSE-4.17:rhcos-s390x-417.94.202607240132-0",
          "9Base-RHOSE-4.17:rhcos-x86_64-417.94.202607240132-0"
        ]
      },
      "references": [
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          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-46323"
        },
        {
          "category": "external",
          "summary": "RHBZ#2479832",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2479832"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-46323",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-46323"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-46323",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46323"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=1f9c828556416fbe3f49386708ce999fc4d4da06",
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=1f9c828556416fbe3f49386708ce999fc4d4da06"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=44bea2032af0425e4ce6d26a8af0ede79db49ec1",
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=44bea2032af0425e4ce6d26a8af0ede79db49ec1"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=479084ae0e1d9cb7929cb4298d35623de189f80a",
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=479084ae0e1d9cb7929cb4298d35623de189f80a"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=4db79a322db8c97f7b73b8a347395ef4d685eb40",
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=4db79a322db8c97f7b73b8a347395ef4d685eb40"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=e334cbf3388fd9334503a778a82d9e9f14dd2f71",
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=e334cbf3388fd9334503a778a82d9e9f14dd2f71"
        },
        {
          "category": "external",
          "summary": "https://lore.kernel.org/netdev/4d583fc5401298453d0a2f1b4719a15be30c8e49.1779194090.git.sd@queasysnail.net/",
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      "scores": [
        {
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            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
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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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          "details": "Important"
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      "title": "kernel: Linux kernel: Use-After-Free in net/gro due to improper handling of zerocopy skbs"
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          "category": "description",
          "text": "A flaw was found in the Linux kernel\u0027s rxrpc subsystem. An unprivileged local user could exploit an integer overflow vulnerability in the `rxrpc_preparse_xdr_yfs_rxgk()` function. This flaw occurs when processing specially crafted key and ticket lengths, causing an incorrect memory allocation size. Consequently, a heap buffer overflow can occur, potentially leading to arbitrary code execution or a denial of service.",
          "title": "Vulnerability description"
        },
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          "text": "kernel: rxrpc: Fix RxGK token loading to check bounds",
          "title": "Vulnerability summary"
        },
        {
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          "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"
        }
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          "details": "The rxrpc kernel module can be prevented from loading to mitigate this issue. This action may impact applications that rely on the rxrpc protocol.\nTo blacklist the rxrpc module:\n1. Create a file `/etc/modprobe.d/blacklist-rxrpc.conf` with the following content:\n   ```\n   blacklist rxrpc\n   install rxrpc /bin/true\n   ```\n2. Regenerate the initramfs:\n   ```bash\n   dracut -f -v\n   ```\n3. Reboot the system for the changes to take effect.",
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          "text": "This Important flaw in the Linux kernel\u0027s networking scheduler can lead to a use-after-free vulnerability. Exploitation requires a local attacker to configure specific `tc qdisc` and `tc filter` rules involving RED qdisc with early drop events and connection tracking on fragmented network traffic. This non-default configuration limits the attack surface, but successful exploitation could lead to privilege escalation or a denial of service.",
          "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"
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      ],
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          "summary": "Canonical URL",
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          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-64530",
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          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-64530",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64530"
        },
        {
          "category": "external",
          "summary": "https://lore.kernel.org/linux-cve-announce/2026072624-CVE-2026-64530-52e9@gregkh/T/#u",
          "url": "https://lore.kernel.org/linux-cve-announce/2026072624-CVE-2026-64530-52e9@gregkh/T/#u"
        }
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      "release_date": "2026-06-23T23:59:00+00:00",
      "remediations": [
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          "category": "vendor_fix",
          "date": "2026-08-17T14:25:46+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:55618"
        },
        {
          "category": "workaround",
          "details": "To mitigate this issue, avoid configuring the Linux kernel\u0027s traffic control (tc) subsystem with the RED queue discipline (`red`) that includes `qevent early_drop` and an `action ct` filter on interfaces processing fragmented UDP streams. This specific configuration is required to trigger the use-after-free vulnerability.",
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          "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"
          },
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      ],
      "threats": [
        {
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          "details": "Important"
        }
      ],
      "title": "kernel: net: sched: UAF via missing handler for TC_ACT_CONSUMED in tcf_qevent_handle"
    }
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        "text": "This is a kernel live patch module which can be loaded by the kpatch command line utility to modify the code of a running kernel.  This patch module is targeted for kernel-4.18.0-477.97.1.el8_8.\n\nSecurity Fix(es):\n\n* kernel: ipv6: icmp: clear skb2-\u003ecb[] in ip6_err_gen_icmpv6_unreach() (CVE-2026-43038)\n\n* kernel: dlm: validate length in dlm_search_rsb_tree (CVE-2026-43125)\n\n* kernel: netfilter: flowtable: strictly check for maximum number of actions (CVE-2026-43329)\n\n* kernel: net: sched: UAF via missing handler for TC_ACT_CONSUMED in tcf_qevent_handle (CVE-2026-64530)\n\nFor 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.",
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        "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.",
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          "text": "kernel: dlm: validate length in dlm_search_rsb_tree",
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          "title": "Vulnerability summary"
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          "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.",
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          "title": "Vulnerability description"
        },
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          "category": "summary",
          "text": "kernel: net: sched: UAF via missing handler for TC_ACT_CONSUMED in tcf_qevent_handle",
          "title": "Vulnerability summary"
        },
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          "category": "other",
          "text": "This Important flaw in the Linux kernel\u0027s networking scheduler can lead to a use-after-free vulnerability. Exploitation requires a local attacker to configure specific `tc qdisc` and `tc filter` rules involving RED qdisc with early drop events and connection tracking on fragmented network traffic. This non-default configuration limits the attack surface, but successful exploitation could lead to privilege escalation or a denial of service.",
          "title": "Statement"
        },
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          "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.",
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          "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"
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      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: net: sched: UAF via missing handler for TC_ACT_CONSUMED in tcf_qevent_handle"
    }
  ]
}