RHSA-2026:44232CriticalCVSS 8.8

Red Hat Security Advisory: OpenShift Container Platform 4.22.7 bug fix and security update

Published
July 28, 2026
Last Modified
August 5, 2026

🔗 CVE IDs covered (3)

CVE-2026-43037 →CVE-2026-57231 →CVE-2026-12505 →

📋 Description

CVE-2026-12505 — cifs-utils: local privilege escalation via forged cifs.spnego key description in cifs.upcall CVE-2026-43037 — kernel: ip6_tunnel: clear skb2->cb[] in ip4ip6_err() CVE-2026-57231 — podman: Podman: Information disclosure via malicious container image environment variables

🎯 Affected products5

  • Red Hat OpenShift Container Platform 4.22
  • rhcos-aarch64-4.22.9.8.202607220526-0 as a component of Red Hat OpenShift Container Platform 4.22
  • rhcos-ppc64le-4.22.9.8.202607220526-0 as a component of Red Hat OpenShift Container Platform 4.22
  • rhcos-s390x-4.22.9.8.202607220526-0 as a component of Red Hat OpenShift Container Platform 4.22
  • rhcos-x86_64-4.22.9.8.202607220526-0 as a component of Red Hat OpenShift Container Platform 4.22

✅ Remediation

For OpenShift Container Platform 4.22 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/4.22/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 sha256:1a50a7c21acc0b113aa74c187bec8798cb58481c065a4c5a0e25df6bc46b8815 (For s390x architecture) The image digest is sha256:fab0fdcd43074c37a41da78a0fa072dedee74e50bbaca089fadaf0aea9dbbe01 (For ppc64le architecture) The image digest is sha256:d3ba0098621b34090d062040dd7bd6a75ab98c0aa50a69ea25cc02cd38743771 (For aarch64 architecture) The image digest is sha256:24ee7f1deedf24b43ccc30c85c14233f1543076db3c2a7acb1c368c9afd7bd23 All OpenShift Container Platform 4.22 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/4.22/html-single/updating_clusters/index#updating-cluster-cli. Workaround: Red Hat is not aware of a practical temporary workaround that fully mitigates this issue or meets Red Hat Product Security's standards for usability, deployment, applicability, or stability. Customers are advised to apply the relevant security updates when they become available. Workaround: Mitigation for this issue is to skip loading the affected module `ip6_tunnel` onto the system till we have a fix available, this can be done by a blacklist mechanism, this will ensure the driver is not loaded at the boot time. ~~~ How do I blacklist a kernel module to prevent it from loading automatically? https://access.redhat.com/solutions/41278 ~~~ We may also want to detection and monitoring an affected system as below: ~~~ Monitor for exploitation attempts: # Enable kernel audit for IPv6 tunnel operations auditctl -a always,exit -F arch=b64 -S socket -F a0=10 -F a1=3 -k ipv6_tunnel # Monitor system logs for kernel panics/crashes journalctl -k -p err -f | grep -i "ip6_tunnel\|icmp\|stack" ~~~ 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.

🔗 References (7)