RHSA-2026:6554 - Security Advisory

Topic

Red Hat OpenShift Container Platform release 4.18.37 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 4.18.37. See the following advisory for the RPM packages for this release:

https://access.redhat.com/errata/RHSA-2026:6552

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 sha256:9b7068aa6f6087c2f0a7cefa241c5dbb0ede0efaad783607dff0da98cac432d2

(For s390x architecture)
The image digest is sha256:71fc972c8f86d9ab444778a4ea4ff4a584acd987e656bd882f0b09f89eca8f69

(For ppc64le architecture)
The image digest is sha256:c07f07c1ab1d2ff0b5c94e2df409fd021562bec9faf3ec1baffa045c9352c66b

(For aarch64 architecture)
The image digest is sha256:925290794f73498da77c7b536b266e0ddcc16b2a16f83f1f7c9ca31a199d735c

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 - 2434431
• BZ - 2434432
• OCPBUGS-38429 - [dpu-operator] fix image references
• OCPBUGS-69648 - MAPO creates events when reconciling machines
• OCPBUGS-70182 - Cluster Recommending Same Installed Version for Upgrade in Multi-Architecture Environment
• OCPBUGS-77194 - [openshift-4.18] ose-libvirt-machine-controllers can't be build hermetically
• OCPBUGS-77853 - [openshift-4.18] multus-cni can't be built hermetically
• OCPBUGS-77903 - [openshift-4.18] ose-aws-cluster-api-controllers can't be built hermetically
• OCPBUGS-78273 - [openshift-4.18] ose-kube-storage-version-migrator can't be built hermetically
• OCPBUGS-78278 - [openshift-4.18] ose-gcp-cluster-api-controllers can't be built hermetically
• OCPBUGS-78550 - installer should recognize new WavelengthZone format
• OCPBUGS-78699 - [4.18] Cluster Autoscaler CAPI provider accumulates replica decrements on paused MachineDeployments causing catastrophic scale-down on unpause
• OCPBUGS-78795 - Edge node with custom KMS key may not be created in particular edge zones due to kms:ReEncrypt* permission is missing in Machine API.
• OCPBUGS-78796 - Azure machineset: image defaults to wrong resource group

CVEs

• CVE-2025-61726
• CVE-2025-61728

References

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