rhsa-2025:21824
Vulnerability from csaf_redhat
Published
2025-11-27 11:08
Modified
2025-11-27 17:38
Summary
Red Hat Security Advisory: OpenShift Container Platform 4.16.53 bug fix and security update

Notes

Topic
Red Hat OpenShift Container Platform release 4.16.53 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red Hat OpenShift Container Platform 4.16. Red 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.
Details
Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. This advisory contains the container images for Red Hat OpenShift Container Platform 4.16.53. See the following advisory for the RPM packages for this release: https://access.redhat.com/errata/156371 Space precludes documenting all of the container images in this advisory. See the following Release Notes documentation, which will be updated shortly for this release, for details about these changes: https://docs.redhat.com/en/documentation/openshift_container_platform/4.16/html/release_notes/ Security Fix(es): * runc: container escape via 'masked path' abuse due to mount race conditions (CVE-2025-31133) * runc: container escape with malicious config due to /dev/console mount and related races (CVE-2025-52565) * runc: opencontainers/selinux: container escape and denial of service due to arbitrary write gadgets and procfs write redirects (CVE-2025-52881) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. All OpenShift Container Platform 4.16 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/4.16/html-single/updating_clusters/index#updating-cluster-cli.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.


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        "text": "Red Hat OpenShift Container Platform release 4.16.53 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 4.16.\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.",
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      "cwe": {
        "id": "CWE-59",
        "name": "Improper Link Resolution Before File Access (\u0027Link Following\u0027)"
      },
      "discovery_date": "2025-10-17T14:17:18.235000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2404705"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in runc. This flaw exploits an issue with how masked paths are implementedin runc. When masking files, runc will bind-mount the container\u0027s /dev/null inode on top of the file. However, if an attacker can replace /dev/null with a symlink to some other procfs file, runc will instead bind-mount the symlink target read-write.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "runc: container escape via \u0027masked path\u0027 abuse due to mount race conditions",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Red Hat considers this as an Important flaw since the impact is limited to local attack with minimal privileges in order to jeopardize the environment.",
          "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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          "9Base-RHOSE-4.16:rhcos-ppc64le-416.94.202511191934-0",
          "9Base-RHOSE-4.16:rhcos-s390x-416.94.202511191934-0",
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      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2025-31133"
        },
        {
          "category": "external",
          "summary": "RHBZ#2404705",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2404705"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2025-31133",
          "url": "https://www.cve.org/CVERecord?id=CVE-2025-31133"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-31133",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-31133"
        }
      ],
      "release_date": "2025-11-05T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2025-11-27T11:08:51+00:00",
          "details": "For OpenShift Container Platform 4.16 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/4.16/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:fe82edf8318eb10aac27fbc005ccee485a6e92734a0241cfa74a5b5ad4f9cc04\n\n      (For s390x architecture)\n      The image digest is sha256:91659a7217d7007c7c89424491935a4cbff57ff651ca183dfc9abe51cad37315\n      (For ppc64le architecture)\n      The image digest is sha256:1b195e402933e9d828a9d48ca1e0ce5835686cffda64a3910efba819de61b829\n      (For aarch64 architecture)\n      The image digest is sha256:d9ad3b1418d7e8c9c5a38f2b378d944c5af7ed31253fd00025d6ac5b340ada50\n\nAll OpenShift Container Platform 4.16 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/4.16/html-single/updating_clusters/index#updating-cluster-cli.",
          "product_ids": [
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            "9Base-RHOSE-4.16:rhcos-ppc64le-416.94.202511191934-0",
            "9Base-RHOSE-4.16:rhcos-s390x-416.94.202511191934-0",
            "9Base-RHOSE-4.16:rhcos-x86_64-416.94.202511191934-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2025:21824"
        },
        {
          "category": "workaround",
          "details": "Potential mitigations for this issue include:\n\n* Using user namespaces, with the host root user not mapped into the container\u0027s namespace. procfs file permissions are managed using Unix\nDAC and thus user namespaces stop a container process from being able to write to them.\n\n* Not running as a root user in the container (this includes disabling setuid binaries with noNewPrivileges). As above, procfs file permissions are managed using Unix DAC and thus non-root users cannot write to them.\n\n* Depending on the maskedPath configuration (the default configuratio nonly masks paths in /proc and /sys), using an AppArmor that blocks unexpectedwrites to any maskedPaths (as is the case with the defaultprofile used by Docker and Podman) will block attempts to exploit this issue. However, CVE-2025-52881 allows an attacker to bypass LSMlabels, and so this mitigation is not helpful when considered incombination with CVE-2025-52881.",
          "product_ids": [
            "9Base-RHOSE-4.16:rhcos-aarch64-416.94.202511191934-0",
            "9Base-RHOSE-4.16:rhcos-ppc64le-416.94.202511191934-0",
            "9Base-RHOSE-4.16:rhcos-s390x-416.94.202511191934-0",
            "9Base-RHOSE-4.16:rhcos-x86_64-416.94.202511191934-0"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "9Base-RHOSE-4.16:rhcos-aarch64-416.94.202511191934-0",
            "9Base-RHOSE-4.16:rhcos-ppc64le-416.94.202511191934-0",
            "9Base-RHOSE-4.16:rhcos-s390x-416.94.202511191934-0",
            "9Base-RHOSE-4.16:rhcos-x86_64-416.94.202511191934-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "runc: container escape via \u0027masked path\u0027 abuse due to mount race conditions"
    },
    {
      "cve": "CVE-2025-52565",
      "cwe": {
        "id": "CWE-59",
        "name": "Improper Link Resolution Before File Access (\u0027Link Following\u0027)"
      },
      "discovery_date": "2025-10-17T14:19:18.653000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2404708"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in runc. CVE-2025-52565 is very similar in concept and application toCVE-2025-31133, except that it exploits a flaw in /dev/console\nbind-mounts. When creating the /dev/console bind-mount (to /dev/pts/$n), if an attacker replaces /dev/pts/$n with a symlink then runc will bind-mount the symlink target over /dev/console.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "runc: container escape with malicious config due to /dev/console mount and related races",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Red Hat considers this as an Important flaw since the impact is limited to local attack with minimal privileges in order to jeopardize the environment.",
          "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-4.16:rhcos-aarch64-416.94.202511191934-0",
          "9Base-RHOSE-4.16:rhcos-ppc64le-416.94.202511191934-0",
          "9Base-RHOSE-4.16:rhcos-s390x-416.94.202511191934-0",
          "9Base-RHOSE-4.16:rhcos-x86_64-416.94.202511191934-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2025-52565"
        },
        {
          "category": "external",
          "summary": "RHBZ#2404708",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2404708"
        },
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          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2025-52565",
          "url": "https://www.cve.org/CVERecord?id=CVE-2025-52565"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-52565",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-52565"
        }
      ],
      "release_date": "2025-11-05T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2025-11-27T11:08:51+00:00",
          "details": "For OpenShift Container Platform 4.16 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/4.16/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:fe82edf8318eb10aac27fbc005ccee485a6e92734a0241cfa74a5b5ad4f9cc04\n\n      (For s390x architecture)\n      The image digest is sha256:91659a7217d7007c7c89424491935a4cbff57ff651ca183dfc9abe51cad37315\n      (For ppc64le architecture)\n      The image digest is sha256:1b195e402933e9d828a9d48ca1e0ce5835686cffda64a3910efba819de61b829\n      (For aarch64 architecture)\n      The image digest is sha256:d9ad3b1418d7e8c9c5a38f2b378d944c5af7ed31253fd00025d6ac5b340ada50\n\nAll OpenShift Container Platform 4.16 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/4.16/html-single/updating_clusters/index#updating-cluster-cli.",
          "product_ids": [
            "9Base-RHOSE-4.16:rhcos-aarch64-416.94.202511191934-0",
            "9Base-RHOSE-4.16:rhcos-ppc64le-416.94.202511191934-0",
            "9Base-RHOSE-4.16:rhcos-s390x-416.94.202511191934-0",
            "9Base-RHOSE-4.16:rhcos-x86_64-416.94.202511191934-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2025:21824"
        },
        {
          "category": "workaround",
          "details": "Potential mitigations for this issue include:\n\n* Using user namespaces, with the host root user not mapped into the container\u0027s namespace. procfs file permissions are managed using Unix DAC and thus user namespaces stop a container process from being able to write to them.\n* Not running as a root user in the container (this includes disabling setuid binaries with noNewPrivileges). As above, procfs file permissions are managed using Unix DAC and thus non-root users cannot write to them.\n* The default SELinux policy should mitigate this issue, as the /dev/console bind-mount does not re-label the mount and so the container process should not be able to write to unsafe procfs files. However, CVE-2025-52881 allows an attacker to bypass LSM labels, and so this mitigation is not helpful when considered in combination with CVE-2025-52881.\n* The default AppArmor profile used by most runtimes will NOT help mitigate this issue, as /dev/console access is permitted. You could create a custom profile that blocks access to /dev/console, but such a profile might break regular containers. In addition, CVE-2025-52881 allows an attacker to bypass LSM labels, and so that mitigation is not helpful when considered in combination with CVE-2025-52881.",
          "product_ids": [
            "9Base-RHOSE-4.16:rhcos-aarch64-416.94.202511191934-0",
            "9Base-RHOSE-4.16:rhcos-ppc64le-416.94.202511191934-0",
            "9Base-RHOSE-4.16:rhcos-s390x-416.94.202511191934-0",
            "9Base-RHOSE-4.16:rhcos-x86_64-416.94.202511191934-0"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "9Base-RHOSE-4.16:rhcos-aarch64-416.94.202511191934-0",
            "9Base-RHOSE-4.16:rhcos-ppc64le-416.94.202511191934-0",
            "9Base-RHOSE-4.16:rhcos-s390x-416.94.202511191934-0",
            "9Base-RHOSE-4.16:rhcos-x86_64-416.94.202511191934-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "runc: container escape with malicious config due to /dev/console mount and related races"
    },
    {
      "cve": "CVE-2025-52881",
      "cwe": {
        "id": "CWE-59",
        "name": "Improper Link Resolution Before File Access (\u0027Link Following\u0027)"
      },
      "discovery_date": "2025-10-17T14:19:18.652000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2404715"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in runc. This attack is a more sophisticated variant of CVE-2019-16884, which was a flaw that allowed an attacker to trick runc into writing the LSM process labels for a container process into a dummy tmpfs file and thus not apply the correct LSM labels to the container process. The mitigation applied for CVE-2019-16884 was fairly limited and effectively only caused runc to verify that when we write LSM labels that those labels are actual procfs files.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "runc: opencontainers/selinux: container escape and denial of service due to arbitrary write gadgets and procfs write redirects",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Red Hat considers this as an Important flaw since the impact is limited to local attack with minimal privileges in order to jeopardize the environment.",
          "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-4.16:rhcos-aarch64-416.94.202511191934-0",
          "9Base-RHOSE-4.16:rhcos-ppc64le-416.94.202511191934-0",
          "9Base-RHOSE-4.16:rhcos-s390x-416.94.202511191934-0",
          "9Base-RHOSE-4.16:rhcos-x86_64-416.94.202511191934-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2025-52881"
        },
        {
          "category": "external",
          "summary": "RHBZ#2404715",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2404715"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2025-52881",
          "url": "https://www.cve.org/CVERecord?id=CVE-2025-52881"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-52881",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-52881"
        },
        {
          "category": "external",
          "summary": "https://github.com/opencontainers/selinux/pull/237",
          "url": "https://github.com/opencontainers/selinux/pull/237"
        }
      ],
      "release_date": "2025-11-05T09:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2025-11-27T11:08:51+00:00",
          "details": "For OpenShift Container Platform 4.16 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/4.16/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:fe82edf8318eb10aac27fbc005ccee485a6e92734a0241cfa74a5b5ad4f9cc04\n\n      (For s390x architecture)\n      The image digest is sha256:91659a7217d7007c7c89424491935a4cbff57ff651ca183dfc9abe51cad37315\n      (For ppc64le architecture)\n      The image digest is sha256:1b195e402933e9d828a9d48ca1e0ce5835686cffda64a3910efba819de61b829\n      (For aarch64 architecture)\n      The image digest is sha256:d9ad3b1418d7e8c9c5a38f2b378d944c5af7ed31253fd00025d6ac5b340ada50\n\nAll OpenShift Container Platform 4.16 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/4.16/html-single/updating_clusters/index#updating-cluster-cli.",
          "product_ids": [
            "9Base-RHOSE-4.16:rhcos-aarch64-416.94.202511191934-0",
            "9Base-RHOSE-4.16:rhcos-ppc64le-416.94.202511191934-0",
            "9Base-RHOSE-4.16:rhcos-s390x-416.94.202511191934-0",
            "9Base-RHOSE-4.16:rhcos-x86_64-416.94.202511191934-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2025:21824"
        },
        {
          "category": "workaround",
          "details": "Potential mitigations for this issue include:\n\n* Using rootless containers, as doing so will block most of the inadvertent writes (runc would run with reduced privileges, making attempts to write to procfs files ineffective).\n* Based on our analysis, neither AppArmor or SELinux can protect against the full version of the redirected write attack. The container runtime is generally privileged enough to write to arbitrary procfs files, which is more than sufficient to cause a container breakout.",
          "product_ids": [
            "9Base-RHOSE-4.16:rhcos-aarch64-416.94.202511191934-0",
            "9Base-RHOSE-4.16:rhcos-ppc64le-416.94.202511191934-0",
            "9Base-RHOSE-4.16:rhcos-s390x-416.94.202511191934-0",
            "9Base-RHOSE-4.16:rhcos-x86_64-416.94.202511191934-0"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "9Base-RHOSE-4.16:rhcos-aarch64-416.94.202511191934-0",
            "9Base-RHOSE-4.16:rhcos-ppc64le-416.94.202511191934-0",
            "9Base-RHOSE-4.16:rhcos-s390x-416.94.202511191934-0",
            "9Base-RHOSE-4.16:rhcos-x86_64-416.94.202511191934-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "runc: opencontainers/selinux: container escape and denial of service due to arbitrary write gadgets and procfs write redirects"
    }
  ]
}


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