RHSA-2026:5174 - Security Advisory

标题

Red Hat OpenShift Container Platform release 4.21.7 is now available with updates to packages and images that fix several bugs and add enhancements.

This release includes a security update for Red Hat OpenShift Container Platform 4.21.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

描述

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 4.21.7. See the following advisory for the RPM packages for this release:

https://access.redhat.com/errata/RHBA-2026:5147

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/

解决方案

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 may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may 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 sha256:90792dfb2c5ebb89007c02486efca50556a23650be0915c7546fc507ab05e0df

(For s390x architecture)
The image digest is sha256:e46ae87b7692e3fae73577f348a927f790d0e3864585a3b9f2f9896d5418ac1a

(For ppc64le architecture)
The image digest is sha256:69f38d2d2485473e99daa8a5f8cce2ecde6d6d25a7818f0fd358c0a0bdd3e3fe

(For aarch64 architecture)
The image digest is sha256:0a9a477c1bc0290f71685aa565da3c803898336ce00f8242e5a7207602a7bc4b

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.

修复

• BZ - 2438237
• OCPBUGS-61201 - nutanix-cloud-controller-manager pod goes in Panic state
• OCPBUGS-63404 - openstack-gather step fails with "Invalid Formatter Provided" in 4.14 and 4.12 jobs
• OCPBUGS-72562 - console ClusterOperator relatedObjects missing ClusterRole
• OCPBUGS-74418 - Missing API to configure External KMS providers
• OCPBUGS-76387 - Console UI - DataView Pagination page menus : i18n misses
• OCPBUGS-76789 - MAPO unit tests fail
• OCPBUGS-77371 - GlobalPullSecret e2e test flaky due to race condition with CountAvailableNodes during kubelet restarts
• OCPBUGS-77456 - When creating a hosted cluster, if the nodeport is defined as 10000, the creation fails
• OCPBUGS-77475 - Bump to Kubernetes v1.34.5
• OCPBUGS-77504 - installer should recognize new WavelengthZone format
• OCPBUGS-77561 - [release-4.21] icon is missing from Console plugins list table
• OCPBUGS-77921 - [release-4.21] Etcd Operator should attempt to scale down replicas in the same AZ first
• OCPBUGS-77957 - [CI] Fix the VolumeSnapshot CRUD flaky test failures
• OCPBUGS-78144 - Update agent-installer-utils to use 4.21 catalog
• OCPBUGS-78173 - [4.21] workloadhints: use IsVM to skip BM-only tests
• OCPBUGS-78196 - Global pull secret syncer preserves new lines in kubelet config
• OCPBUGS-78393 - Update Konflux release version
• OCPBUGS-78528 - [release-4.21] Fix MCO IRI e2e tests
• OCPBUGS-78535 - DTK kernel version check fails due to microdnf
• OCPBUGS-78784 - [4.21] Add event-ttl e2e test to its own periodics

CVE

• CVE-2026-25639

参考

• https://access.redhat.com/security/updates/classification/