RHSA-2025:3720 - Security Advisory

Topic

Multicluster engine for Kubernetes v2.8.1 General Availability release, with updates to container images.

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 links in the References section.

Description

Multicluster engine for Kubernetes v2.8.1 images

The multicluster engine for Kubernetes operator provides the foundational
components that are necessary for the centralized management of multiple
Kubernetes-based clusters across data centers, public clouds, and private
clouds.

You can use the engine to create new Red Hat OpenShift Container Platform
clusters, or to import existing Kubernetes-based clusters for management.

After the clusters are managed, you can use the APIs that are provided by
the engine to distribute configuration that is based on placement policy.

Security fix(es):

• golang.org/x/oauth2: Unexpected memory consumption during token parsing in

golang.org/x/oauth2 (CVE-2025-22868)

Solution

For multicluster engine for Kubernetes, see the following documentation for
details on how to install the images:

https://docs.redhat.com/documentation/en-us/red_hat_advanced_cluster_management_for_kubernetes/2.13/html/clusters/cluster_mce_overview#mce-install-intro

Affected Products

• multicluster engine for Kubernetes 1 x86_64

Fixes

• BZ - 2348366 - CVE-2025-22868 golang.org/x/oauth2/jws: Unexpected memory consumption during token parsing in golang.org/x/oauth2/jws
• ACM-19146 - Assisted image service pod stuck in `CrashLoopBackOff` state with MCE version 2.8.0

CVEs

• CVE-2024-8176
• CVE-2024-56171
• CVE-2025-22868
• CVE-2025-24928
• CVE-2025-27144

References

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