RHBA-2026:8424 - Bug Fix Advisory

Topic

Red Hat OpenShift Container Platform release 4.21.11 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 4.21.11. See the following advisory for the RPM packages for this release:

https://access.redhat.com/errata/RHBA-2026:8419

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/4.21/html/release_notes/

Solution

For OpenShift Container Platform 4.21 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/4.21/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:a2726e3135049af3b889450a6ffcd81605b9a42dd24e5b3b7bc42621548366c2

(For s390x architecture)
The image digest is sha256:a04a9f53dff043c8b2c6b432f2ddcac32c6557f2128031346127973b4cb707a5

(For ppc64le architecture)
The image digest is sha256:2877a8b02e171d59f33b6e34ccfbd41c7f468b3a25b9383637e4429de8d09114

(For aarch64 architecture)
The image digest is sha256:75f6c3c540dabeaa754e23d256e26f21877a07b759700d31b87849c8e945587d

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/openshift_container_platform/4.21/html-single/updating_clusters/index#updating-cluster-cli.

Affected Products

• Red Hat OpenShift Container Platform

Fixes

• OCPBUGS-76609 - CIO should never create a second OSSM subscription
• OCPBUGS-78580 - [ BareMetal IPI ] Switching provisioningNetwork from `managed` to `unmanaged` does not create a route via the provisioning IP
• OCPBUGS-79040 - [OCP 4.21][TechPreview] Incorrect OLMv1 docs URL in *Software Catalog* > *Operators* page
• OCPBUGS-79351 - Virtual machine folder field is empty in vsphere connection configuration after upgrading to OCP 4.18.
• OCPBUGS-79534 - [release-4.21] Gather the data from OpenTelemetry operator
• OCPBUGS-81327 - [4.21] linuxptp-daemon is not prepared to run kernel with mr 5470
• OCPBUGS-81330 - [release-4.21] Perspective switcher icon suspends entire app after initial load
• OCPBUGS-81475 - [4.21] - Application pods traffic is dropped during the kube-apiserver rollout
• OCPBUGS-81490 - In the ARO-HCP Swift cluster, private router has service type LoadBalancer
• OCPBUGS-81517 - [release-4.21] Follow up on fixing the remaining issues in the multi-group impersonation feature
• OCPBUGS-81642 - Using agent based install of 2 nodes with arbiter complets the bootstrap step but does not move forward
• OCPBUGS-81711 - When adding new nodes, MCD executes commands after setting the nodes' state as Done
• OCPBUGS-81714 - [release-4.21] Pagination component missing i18n for "Items per page" and "per page" strings
• OCPBUGS-81745 - [backport release-4.21] HCP: hypershift-operator ignores AWS AMI override in NodePool specification causing failures in AWS ISO (classified) regions
• OCPBUGS-81836 - Secrets associated to Service Accounts are still being created when Registry is Removed in ROSA HCP 4.20
• OCPBUGS-82064 - [release-4.21] Revert UDN test removal from origin repo and bump CNI version to 1.1.0 in the tests
• OCPBUGS-82161 - Migration from Yarn Classic (v1) to NPM
• OCPBUGS-82163 - Migration from Yarn Classic (v1) to NPM
• OCPBUGS-82302 - [release-4.21] Alertmanager Source URL redirect from monitoring/graph to monitoring/query-browser breaks query
• OCPBUGS-82539 - CLONE - Update OVE UI Konflux references

CVEs

(none)

References

(none)