RHSA-2026:73851HighCVSS 7.5

Red Hat Security Advisory: OpenShift Container Platform 4.16.72 bug fix update

Published
October 8, 2026
Last Modified
October 15, 2026

🔗 CVE IDs covered (3)

CVE-2025-66418 →CVE-2026-54369 →CVE-2026-58014 →

📋 Description

CVE-2025-66418 — urllib3: urllib3: Unbounded decompression chain leads to resource exhaustion CVE-2026-54369 — acl: Symlink traversal privilege escalation via libacl functions CVE-2026-58014 — glib: off-by-one error in glib/gkeyfile.c via "g_key_file_get_locale_string_list"

🎯 Affected products5

  • Red Hat OpenShift Container Platform 4.16
  • rhcos-aarch64-416.94.202609281908-0 as a component of Red Hat OpenShift Container Platform 4.16
  • rhcos-ppc64le-416.94.202609281908-0 as a component of Red Hat OpenShift Container Platform 4.16
  • rhcos-s390x-416.94.202609281908-0 as a component of Red Hat OpenShift Container Platform 4.16
  • rhcos-x86_64-416.94.202609281908-0 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 can download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests can 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 sha256:9cf7596b1c295a65f4b38d96f231690661869f496bc30dd002f07e31aac87f89 (For s390x architecture) The image digest is sha256:90ac5292f633ef445d838bf363b0b93328a7e371e4e14762764b71a868b2bc6b (For ppc64le architecture) The image digest is sha256:a2326dc17aa9a3eb441e509fba8485e3f7e28a9c2515f5c85b5b9fcf226ef5cc (For aarch64 architecture) The image digest is sha256:71f6c76d872323fca9ca822a86b3bcba426b13c5c7cd1b02fbb4c7bd0d389610 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: Restrict unprivileged users from creating symlinks in directories that privileged processes operate on with ACL commands. Where possible, use the fs.protected_symlinks sysctl (enabled by default on RHEL 7+), which prevents symlink following in world-writable sticky directories unless the owner of the symlink matches the owner of the target file or directory. Workaround: To mitigate this vulnerability, implement input validation to sanitize untrusted key files (such as .desktop or .ini files), specifically rejecting or stripping empty values before calling g_key_file_get_locale_string_list(). Alternatively, restricting the application to only load key files from trusted sources will completely neutralize this issue.

🔗 References (6)