RHSA-2026:3905 - Security Advisory

Topic

Red Hat OpenShift Container Platform release 4.18.35 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 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.

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

https://access.redhat.com/errata/RHSA-2026:3875

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 sha256:59727c4b3fef19e5149675cf3350735bbfe2c6588a57654b2e4552dd719f58b1

(For s390x architecture)
The image digest is sha256:990383bd551e781327ce7972144fc0c9a614c048d7ccbde562548e07f85192b3

(For ppc64le architecture)
The image digest is sha256:5e284927ceb1b59b986ac80acf1e4d097b09587f0751c65c5488c2c29dd51d8c

(For aarch64 architecture)
The image digest is sha256:0a43bf979ac93078a64c99f078b6097634920909f9acbaa18d494b7203b33a52

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 - 2387083
• BZ - 2407258
• BZ - 2418462
• BZ - 2434432
• OCPBUGS-67280 - ose-metallb can't be built hermetically due to incomplete vendor/
• OCPBUGS-74154 - whereabouts-config is a reserved name for user interaction
• OCPBUGS-74485 - Restore FRR rpm in Dockerfile
• OCPBUGS-74548 - CCO pod crashing with nil pointer exception
• OCPBUGS-74644 - After OCL is enabled few phases in MCN are not updating as expected
• OCPBUGS-74898 - ABI failures after cluster is registered are ignored
• OCPBUGS-76537 - [release-4.18] The insights archive path doesn't respect the path that is set via storagePath
• OCPBUGS-76560 - MCS and kube-rbac-proxy ports require service endpoints for documentation
• OCPBUGS-76988 - BMH stuck in deleting state while performing IBBF
• OCPBUGS-77083 - ovnkube failed to start node network controller
• OCPBUGS-77092 - Machine-config controller should not log about non-existent pull-secret changes
• OCPBUGS-77207 - [openshift-4.18] hermetic build failure - ose-ibm-vpc-block-csi-driver
• OCPBUGS-77398 - [release-4.18] Incorrect AlertManagerConfig causing Monitoring operator degraded

CVEs

• CVE-2025-47907
• CVE-2025-58183
• CVE-2025-61726
• CVE-2025-61729

References

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