RHSA-2026:29863: Important: OpenShift Container Platform 4.19.36 bug fix and security update

Red Hat OpenShift Container Platform is Red Hat's cloud computingKubernetes application platform solution designed for on-premise or privatecloud deployments.This advisory contains the container images for Red Hat OpenShift ContainerPlatform 4.19.36. See the following advisory for the RPM packages for thisrelease:https://access.redhat.com/errata/RHBA-2026:29862 Space precludes documenting all of the container images in this advisory.See the following Release Notes documentation, which will be updatedshortly for this release, for details about these changes:https://docs.redhat.com/en/documentation/openshiftcontainerplatform/4.19/html/releasenotes/ Security Fix(es): bind: BIND: Denial of Service via maliciously crafted DNSSEC-validated zone (CVE-2026-1519) samba: Missing access check on reparse point operations (CVE-2026-1933) samba: group policy certificate enrollment uses http:// without validation (CVE-2026-3012) samba: Remote Code Execution in SAMR (CVE-2026-4408) kernel: net/sched: actpedit: extend the writable skb range per key (CVE-2026-46331) samba: vfsworm does not block directory modification (CVE-2026-2340) For more details about the security issue(s), including the impact, a CVSSscore, acknowledgments, and other related information, refer to the CVEpage(s) listed in the References section.All OpenShift Container Platform 4.19 users are advised to upgrade to theseupdated packages and images when they are available in the appropriaterelease channel. To check for available updates, use the OpenShift CLI (oc)or web console. Instructions for upgrading a cluster are available athttps://docs.redhat.com/en/documentation/openshiftcontainerplatform/4.19/html-single/updatingclusters/index#updating-cluster-cli.

— Red Hat