RHSA-2026:95410: OpenShift Container Platform 4.21.42 security and extras update
OpenShift Container Platform 4.21.42 security and extras update
Other sources
Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments.This advisory contains the RPM packages for Red Hat OpenShift Container Platform 4.21.42. See the following advisory for the container images for this release:https://access.redhat.com/errata/RHSA-2026:95409 Security Fix(es): github.com/kubernetes-sigs/aws-efs-csi-driver: Amazon EFS CSI Driver: Unauthorized directory deletion via unverified access point ownership (CVE-2026-85781) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.All OpenShift Container Platform 4.21 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/openshiftcontainerplatform/4.21/html-single/updatingclusters/index#updating-cluster-cli.
— Red Hat
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Red Hat OpenShift Container Platformto a version that resolves this vulnerability.Fixed in 4.21.42
Event History
Frequently Asked Questions
Which OpenShift deployments should be updated?
All Red Hat OpenShift Container Platform 4.21 users are advised to upgrade to the updated packages and images when they become available in the appropriate release channel.
Does applying the RPM update alone cover the complete release update?
No. This advisory provides RPM packages for OpenShift Container Platform 4.21.42; the corresponding container images are covered by RHSA-2026:95409.
What component is associated with the security fix?
The listed fix affects the Kubernetes SIG AWS EFS CSI Driver and concerns unauthorized directory deletion caused by unverified access point ownership.
How can administrators check whether the update is available?
Use the OpenShift CLI (oc) or the web console to check for available updates.