RHBA-2026:13863 - Bug Fix Advisory

Topic

Red Hat OpenShift Container Platform release 4.20.21 is now available with updates to packages and images that fix several bugs.

Description

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 container images for Red Hat OpenShift Container Platform 4.20.21. See the following advisory for the RPM packages for this release:

https://access.redhat.com/errata/RHBA-2026:13861

Space precludes documenting all of the container images in this advisory. See the following Release Notes documentation, which will be updated shortly for this release, for details about these changes:

https://docs.redhat.com/en/documentation/openshift_container_platform/4.20/html/release_notes/

Solution

For OpenShift Container Platform 4.20 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/4.20/html/release_notes/

You can download the oc tool and use it to inspect release image metadata
for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests
can 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 sha256:54c81ab130a264829c9a3434df1005074cc9b2edc8e31ead40ac94faf3debf72

(For s390x architecture)
The image digest is sha256:2881f17af6f362c4784089cef1b51bffe5a3fd794a33407f67270f03075acc62

(For ppc64le architecture)
The image digest is sha256:5e255bd2beb50d9ee632dd69146f1bbbd9a7af2fc1a3ad364cb6279fccd88684

(For aarch64 architecture)
The image digest is sha256:010d8649eaaae1d49f3700b376c84d5b044b5b6e05ad63078883e05f5904e4e5

All OpenShift Container Platform 4.20 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/4.20/html-single/updating_clusters/index#updating-cluster-cli.

Affected Products

• Red Hat OpenShift Container Platform

Fixes

• OCPBUGS-78057 - [release-4.20] console-plugin-template is using an old version of the SDK
• OCPBUGS-78076 - openshift-enterprise-base image includes subscription-manager, dbus, systemd
• OCPBUGS-78777 - [4.20] Upgrading with NADs using same network name causes VMs using a ovn-k8s-cni-overlay localnet NAD to lose connectivity due to a missing logical port on some of the VMs
• OCPBUGS-78993 - Bump Kubernetes v1.33.10 to release-4.20
• OCPBUGS-79001 - [GCP] installing with m3 machine types failed with error like 'failed to create install config: [controlPlane.platform.gcp.type: Not found: "m3"'
• OCPBUGS-79532 - [4.20] volume-data-source-validator should run on master (control plane) node
• OCPBUGS-81477 - [4.20] - Application pods traffic is dropped during the kube-apiserver rollout
• OCPBUGS-81481 - [4.20] linuxptp-daemon is not prepared to run kernel with mr 5470
• OCPBUGS-81643 - [ BareMetal IPI ] Switching provisioningNetwork from `managed` to `unmanaged` does not create a route via the provisioning IP
• OCPBUGS-82536 - Event noise upon T-GM dual WPC clock locking from freerun
• OCPBUGS-83393 - In SNO clusters MCC cannot take the lease after the node is rebooted
• OCPBUGS-83450 - In SNO clusters MCC cannot take the lease after the node is rebooted
• OCPBUGS-83507 - csi-snapshot-controller PDB's Eviction Policy is set wrong
• OCPBUGS-83663 - In the ARO-HCP Swift cluster, private router has service type LoadBalancer
• OCPBUGS-83867 - [Automated] Update AMI Whitelist
• OCPBUGS-84068 - [4.20.z] Thanos Querier returns 502 when using namespace label matcher due to prom-label-proxy panic
• OCPBUGS-84132 - [4.20] Gateway Controller coexistence with Istio is broken due to missing trustBundleName

CVEs

(none)

References

(none)