RHSA-2026:89714CriticalCVSS 8.8

Red Hat Security Advisory: OpenShift Container Platform 4.16.74 bug fix and security update

Published
October 27, 2026
Last Modified
October 30, 2026

🔗 CVE IDs covered (8)

CVE-2026-64564 →CVE-2026-68121 →CVE-2026-80792 →CVE-2026-80863 →CVE-2026-80864 →CVE-2026-99999 →CVE-2026-114406 →CVE-2026-43114 →

📋 Description

CVE-2026-43114 — kernel: netfilter: nft_set_pipapo_avx2: don't return non-matching entry on expiry CVE-2026-64564 — kernel: sctp: don't free the ASCONF's own transport in DEL-IP processing CVE-2026-68121 — kernel: pppoe: reload header pointer after dev_hard_header() CVE-2026-80792 — kernel: ipv6: fix use-after-free in ip6_finish_output2() CVE-2026-80863 — kernel: RDMA/rxe: Fix OOB in free_rd_atomic_resources() CVE-2026-80864 — kernel: RDMA/rxe: Fix responder UAF on IB_QP_MAX_DEST_RD_ATOMIC modify_qp CVE-2026-99999 — kernel: ipv4: validate checksum_start before completing checksum CVE-2026-114406 — ca-certificates: Distrust eMudhra intermediate CA certificates due to security concerns

🎯 Affected products5

  • Red Hat OpenShift Container Platform 4.16
  • rhcos-aarch64-416.94.202610242150-0 as a component of Red Hat OpenShift Container Platform 4.16
  • rhcos-ppc64le-416.94.202610242150-0 as a component of Red Hat OpenShift Container Platform 4.16
  • rhcos-s390x-416.94.202610242150-0 as a component of Red Hat OpenShift Container Platform 4.16
  • rhcos-x86_64-416.94.202610242150-0 as a component of Red Hat OpenShift Container Platform 4.16

✅ Remediation

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: https://docs.redhat.com/en/documentation/openshift_container_platform/4.16/html/release_notes/ You 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. The sha values for the release are as follows: (For x86_64 architecture) The image digest is sha256:58c211bf5fa3664f25940bf74fd4f4456938fa7f2abcefef3fcd7bfcced6b226 (For s390x architecture) The image digest is sha256:607a20b5005168109bbfb354afbe81f670a1f9f3a17bcbb6abaa30901732e49b (For ppc64le architecture) The image digest is sha256:56516f7c82727f72522365591ea900d8140ef5f7369a5d953e8594cf330822fa (For aarch64 architecture) The image digest is sha256:18b7a1f3673ec4d7d8e8faf1c533007ad369c9652acf6a49737048b2704bc378 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. Workaround: 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. Workaround: To mitigate this issue, prevent the `sctp` kernel module from loading. Create a file named `/etc/modprobe.d/disable-sctp.conf` with the following content: ``` install sctp /bin/true blacklist sctp ``` After creating the file, regenerate the initramfs and reboot the system for the changes to take effect. Applications or services that rely on the SCTP protocol cannot use this mitigation and should prioritize applying the fix. Workaround: See the security bulletin for a detailed mitigation procedure. Workaround: To mitigate this issue, prevent module rdma_rxe from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically. Workaround: To mitigate this issue, prevent the rdma_rxe kernel module from being loaded. 1. Create a configuration file in /etc/modprobe.d to disable loading of the module: # echo "install rdma_rxe /bin/true" > /etc/modprobe.d/disable-rdma_rxe.conf 2. If the module is currently loaded, attempt to unload it: # modprobe -r rdma_rxe Caveats: Disabling this module prevents the creation and operation of software RDMA over Converged Ethernet (Soft-RoCE) devices. Applications requiring rdma_rxe will fail to initialize. If the module is currently in active use and cannot be unloaded dynamically, a system reboot is required to ensure the module is fully disabled.

🔗 References (11)