RHSA-2026:2977 - Security Advisory

Topic

Red Hat OpenShift Container Platform release 4.18.34 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 4.18.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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.

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

https://access.redhat.com/errata/RHSA-2026:2975

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/4.18/html/release_notes/

Solution

For OpenShift Container Platform 4.18 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/4.18/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 sha256:14bd3c04daa885009785d48f4973e2890751a7ec116cc14d17627245cda54d7b

(For s390x architecture)
The image digest is sha256:8fa62a2f2fe6cf7b21c97b5db889e1320f40924e84be8273b05cb995af18a33a

(For ppc64le architecture)
The image digest is sha256:64963e6db3fbf634000d05f88d6fcd4a8e2d4a30caa2ce645b976e2bfadf8c1f

(For aarch64 architecture)
The image digest is sha256:bc4dd607807cf7b1c218b2f81a053e1d13a14ef89c24ef092df455d87deca46c

All OpenShift Container Platform 4.18 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/4.18/html-single/updating_clusters/index#updating-cluster-cli.

Fixes

• BZ - 2418900
• OCPBUGS-69672 - [release-4.18] systemd as container init with spc_t breaks configmap mount permissions
• OCPBUGS-74270 - [4.18] Upgrading causes VMs using a ovn-k8s-cni-overlay localnet NAD to lose connectivity due to a missing logical port
• OCPBUGS-74676 - GCP installs should succeed if 'zones' is not specified and the region has an AI zone
• OCPBUGS-74873 - Accumulated CRS stores resulting in duplicate VPA metrics
• OCPBUGS-74911 - dm-mpath-root is not recognized by RHCOS when deploying OCP with ABI on baremetal (with FC SAN) and diskEncryption enabled
• OCPBUGS-74976 - Include go-verify-deps expected files in gitignore for prometheus-alertmanager
• OCPBUGS-74986 - machine-api-provider-openstack fails to delete primary NIC before delete instance
• OCPBUGS-75871 - [4.18] missing newline to cloud-event-proxy
• OCPBUGS-75925 - [release-4.18] VPA recommendation dropped to minimal request due to upstream issue #7726
• OCPBUGS-76284 - Static pods terminated early during graceful shutdown due to missing priority field
• OCPBUGS-76924 - Remove collect-profiles cronjob [4.18]

CVEs

• CVE-2025-65637

References

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