RHSA-2025:8560 - Security Advisory

Topic

Red Hat OpenShift Container Platform release 4.18.17 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 4.18.17. See the following advisory for the RPM packages for this
release:

https://access.redhat.com/errata/RHBA-2025:8561

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/

Security Fix(es):

• golang-jwt/jwt: jwt-go allows excessive memory allocation during header

parsing (CVE-2025-30204)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

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.

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 sha256:9d24a8cdd67b8f18c99547d5910e4863e7aab5bd888e26670a00dbda0a9d4687

(For s390x architecture)
The image digest is sha256:d6e30dbd3e240d3fd8a47242d328e12af9e163e4f0b4a65f1822afe580a62ef0

(For ppc64le architecture)
The image digest is sha256:38222db37661b7df451174b32eb5bf0277f24f7dccdb6116143a7e7a3a1cc771

(For aarch64 architecture)
The image digest is sha256:a9ec080140eb10d89152878911949607becef8750975741c110b36ae7e2b6c7b

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.

Affected Products

• Red Hat OpenShift Container Platform 4.18 for RHEL 9 x86_64
• Red Hat OpenShift Container Platform 4.18 for RHEL 8 x86_64
• Red Hat OpenShift Container Platform for Power 4.18 for RHEL 9 ppc64le
• Red Hat OpenShift Container Platform for Power 4.18 for RHEL 8 ppc64le
• Red Hat OpenShift Container Platform for IBM Z and LinuxONE 4.18 for RHEL 9 s390x
• Red Hat OpenShift Container Platform for IBM Z and LinuxONE 4.18 for RHEL 8 s390x
• Red Hat OpenShift Container Platform for ARM 64 4.18 for RHEL 9 aarch64
• Red Hat OpenShift Container Platform for ARM 64 4.18 for RHEL 8 aarch64

Fixes

• BZ - 2354195 - CVE-2025-30204 golang-jwt/jwt: jwt-go allows excessive memory allocation during header parsing
• OCPBUGS-30260 - Correctly handle HCP subnet tagging for management clusters to not break cloud-provider-aws subnet selection
• OCPBUGS-53428 - HorizontalPodAutoscalers via console require CPU resource limit even though HPAs use requests for scaling
• OCPBUGS-56384 - undiagnosed panic detected (pods/openshift-kube-apiserver)
• OCPBUGS-56659 - oc-mirror v2 has no output while loading cache during disk2mirror function
• OCPBUGS-56703 - MCP is reported degraded in the upgrade from OCP 4.15.44 to 4.16.39 with error "Marking Degraded due to: "unexpected on-disk state validating against rendered-worker-XXXXX: content mismatch for file \"/etc/systemd/system/kubelet-dependencies.target\""
• OCPBUGS-56732 - Fix promtool analyze block shows metric name with 0 cardinality
• OCPBUGS-56757 - HorizontalPodAutoscalers via console require CPU resource limit even though HPAs use requests for scaling
• OCPBUGS-56793 - Add Catalog Default Tests on 4.18
• OCPBUGS-56823 - Boot Image Controller should not degrade when golden configmap is slow to update
• OCPBUGS-56864 - No validation prevents IPI installing only a single node
• OCPBUGS-56919 - library-go: ApplyDirectly unable to handle ValidatingAdmissionPolicyV1, ValidatingAdmissionPolicyBindingV1

CVEs

• CVE-2025-30204

References

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