RHSA-2025:15397HighCVSS 9.1

Red Hat Security Advisory: OpenShift Container Platform 4.20.0 bug fix and security update

Published
October 21, 2025
Last Modified
August 31, 2026

🔗 CVE IDs covered (6)

CVE-2025-5914 →CVE-2025-5994 →CVE-2025-6032 →CVE-2025-6965 →CVE-2025-49794 →CVE-2025-49796 →

📋 Description

CVE-2025-5914 — libarchive: Double free at archive_read_format_rar_seek_data() in archive_read_support_format_rar.c CVE-2025-5994 — unbound: Unbound Cache poisoning CVE-2025-6032 — podman: podman missing TLS verification CVE-2025-6965 — sqlite: Integer Truncation in SQLite CVE-2025-49794 — libxml: Heap use after free (UAF) leads to Denial of service (DoS) CVE-2025-49796 — libxml: Type confusion leads to Denial of service (DoS)

🎯 Affected products5

  • Red Hat OpenShift Container Platform 4.20
  • rhcos-aarch64-4.20.9.6.202509251656-0 as a component of Red Hat OpenShift Container Platform 4.20
  • rhcos-ppc64le-4.20.9.6.202509251656-0 as a component of Red Hat OpenShift Container Platform 4.20
  • rhcos-s390x-4.20.9.6.202509251656-0 as a component of Red Hat OpenShift Container Platform 4.20
  • rhcos-x86_64-4.20.9.6.202509251656-0 as a component of Red Hat OpenShift Container Platform 4.20

✅ Remediation

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: https://docs.redhat.com/en/documentation/openshift_container_platform/4.20/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:d1dc76522d1e235b97675b28e977cb8c452f47d39c0eb519cde02114925f91d2 (For s390x architecture) The image digest is sha256:bb2b07ca992b8c976341c145ccdcefbd57e946a590efaa5e10d60fc5a2cbe503 (For ppc64le architecture) The image digest is sha256:678369ac0a189674b3d9f5779ee7042b39e625ee580579ec302d8899f8ddc613 (For aarch64 architecture) The image digest is sha256:791079aeb081a9193cec139ba4dccbafbfc9437b6e5e39d70225b0e6d2f51b34 All 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. 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: Download the VM image manually with another tool that verifies the TLS certificate and then pass the local image as a file path to podman, for example: # podman machine init --image <local-image-path> Workaround: There's no available mitigation other than avoid processing untrusted XML documents before updating to the libxml version containing the fix. Workaround: There's no available mitigation other than to avoid processing untrusted XML documents if the user is unable/unwilling to update the library.

🔗 References (18)