RHSA-2026:23241 - Security Advisory

标题

Red Hat OpenShift Container Platform release 4.21.19 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 4.21.19. See the following advisory for the RPM packages for this release:

https://access.redhat.com/errata/RHBA-2026:23239

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 sha256:1417c1970881b2a3b8d4baf2bfed9afc8be016ed82a86a2245fe8c683a82ab33

(For s390x architecture)
The image digest is sha256:713c99f6f70ee1297892c4920860ebbc2dc981e22273bb3a6aace5dcc1e28699

(For ppc64le architecture)
The image digest is sha256:d35c97623e5b5e1c43a4f27de6946831eaf892584dc25f5675cb0a1800dd418e

(For aarch64 architecture)
The image digest is sha256:ff686a31f4e7a8d8a495bd4cbc344d35e9cd6a3c09cbd4dae41e12caf8935c3f

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.

受影响的产品

• Red Hat OpenShift Container Platform

修复

• BZ - 2436075
• BZ - 2449833
• BZ - 2455470
• OCPBUGS-84336 - [release-4.21] TNF fails on 4.20/4.21: podman-etcd port-conflict during install
• OCPBUGS-84481 - ABI installs failing with nodes unable to pull ignition
• OCPBUGS-84967 - [release-4.21] ConsoleDataView should have both top and bottom pagination controls
• OCPBUGS-85572 - Manila CSI driver node plugin fatally exits on startup when NFS plugin socket is not yet ready
• OCPBUGS-86027 - Missing logs for the gateway-labeler, gateway-service-dns, and gatewayclass controllers
• OCPBUGS-86216 - Manually uncordoned nodes are not automatically re-cordoned
• OCPBUGS-86314 - [release-4.21] Permission error showed up on some resources page when normal user without project accessed pages.
• OCPBUGS-86427 - [release-4.21] CLONE - Shipwright builds page crashes with react error
• OCPBUGS-86513 - node-tuning-operator: python3-perf is frozen at 9.5.z causing CVE scanning concerns
• OCPBUGS-86809 - [4.21] PerformanceProfile degraded after master nodes reboot in MNO
• OCPBUGS-86814 - [release 4.21] - [OVE] Custom manifests are broken in local Assisted UI
• OCPBUGS-86816 - [release-4.21] pod-identity-webhook strips restartPolicy from native sidecar containers (Azure Workload Identity)

CVE

• CVE-2026-1784
• CVE-2026-33186
• CVE-2026-34986

参考

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