RHSA-2026:5876: Moderate: OpenShift Container Platform 4.19.27 packages 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 RPM packages for Red Hat OpenShift ContainerPlatform 4.19.27. See the following advisory for the container images forthis release:https://access.redhat.com/errata/RHSA-2026:5878 Security Fix(es): golang: archive/tar: Unbounded allocation when parsing GNU sparse map (CVE-2025-58183) crypto/tls: Unexpected session resumption in crypto/tls (CVE-2025-68121) 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