RHSA-2026:60440HighCVSS 8.6

Red Hat Security Advisory: OpenShift Container Platform 4.22.12 bug fix and security update

Published
September 1, 2026
Last Modified
October 16, 2026

🔗 CVE IDs covered (9)

CVE-2026-72693 →CVE-2026-9547 →CVE-2026-10723 →CVE-2026-15816 →CVE-2026-44690 →CVE-2026-55973 →CVE-2026-68343 →CVE-2026-8286 →CVE-2026-11331 →

📋 Description

CVE-2026-8286 — curl: curl: Insecure connection establishment due to TLS configuration mismatch CVE-2026-9547 — curl: curl: Man-in-the-middle attack via SSH host key bypass CVE-2026-10723 — bind: bind9: Incorrect acceptance of NSEC3 records CVE-2026-11331 — bind: bind: Denial of Service via long query names in RPZ processing CVE-2026-15816 — dracut: dracut: root code execution via unescaped error message written to sourced emergency hook script in die() CVE-2026-44690 — unbound: Unbound: Cache poisoning via insufficient RRSIG.Labels validation and premature cache writes CVE-2026-55973 — unbound: Unbound: Denial of Service via malformed EDNS Report-Channel option CVE-2026-68343 — kernel: smb: client: validate DFS referral PathConsumed CVE-2026-72693 — kbd: Local privilege escalation in openvt via incorrect process owner verification allowing passwordless root login

🎯 Affected products5

  • Red Hat OpenShift Container Platform 4.22
  • rhcos-aarch64-4.22.9.8.202608251819-0 as a component of Red Hat OpenShift Container Platform 4.22
  • rhcos-ppc64le-4.22.9.8.202608251819-0 as a component of Red Hat OpenShift Container Platform 4.22
  • rhcos-s390x-4.22.9.8.202608251819-0 as a component of Red Hat OpenShift Container Platform 4.22
  • rhcos-x86_64-4.22.9.8.202608251819-0 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:c987c0017b86a5aed02d5fa854b4649039e7221e14fca2e824dc37b2937ce7b2 (For s390x architecture) The image digest is sha256:e38f225c850f6fdbdaf6ac3ef1f762b1e7068da19ef3cd57a00f72554e3d0a72 (For ppc64le architecture) The image digest is sha256:ea726e65a0f5f8ae5b5fe4ce31f2aa75943c893c91bd75feb644c4042c88865d (For aarch64 architecture) The image digest is sha256:ab1d1b8e7b22fb2a6b3923e6e8fe77b8f0f774c762836a07542b7ed5ad52d86d 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: 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, restrict resolver access to trusted networks and avoid using wildcard CNAME entries within Response Policy Zones (RPZ). 1. Edit `/etc/named.conf` to limit recursion and query caching to authorized client networks: ``` acl trusted_clients { 127.0.0.1; 192.168.1.0/24; }; options { allow-recursion { trusted_clients; }; allow-query-cache { trusted_clients; }; }; ``` Additionally, modify RPZ zone files to remove wildcard CNAME statements (such as `*.example.com CNAME target.com`), replacing them with explicit individual domain entries where feasible. 2. Reload the named service configuration: `systemctl reload named` Caveats: Restricting query access prevents untrusted external clients from resolving names through the server. Removing wildcard entries means unlisted subdomains will no longer be intercepted by the policy zone until explicit records are added. Warning: Reloading or restarting the named daemon may briefly disrupt ongoing DNS resolution. Workaround: Restrict DHCP server access on networks used for network boot (DHCP snooping, dedicated/trusted provisioning VLANs) until a fix is available. 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, avoid using `openvt -u` in privileged `kbrequest`/init deployments. Instead, configure the keyboard request to initiate a standard authenticated login on the new virtual terminal, or disable the keyboard request binding entirely until a fix is available. Changes to `kbrequest` configurations may require a system restart or service reload to take effect.

🔗 References (12)