The following advisory data is extracted from:

https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_3053.json

Red Hat officially shut down their mailing list notifications October 10, 2023.  Due to this, Packet Storm has recreated the below data as a reference point to raise awareness.  It must be noted that due to an inability to easily track revision updates without crawling Red Hat's archive, these advisories are single notifications and we strongly suggest that you visit the Red Hat provided links to ensure you have the latest information available if the subject matter listed pertains to your environment.

- Packet Storm Staff




====================================================================
Red Hat Security Advisory

Synopsis:           Important: Gatekeeper v3.15.4
Advisory ID:        RHSA-2025:3053-03
Product:            gatekeeper
Advisory URL:       https://access.redhat.com/errata/RHSA-2025:3053
Issue date:         2025-03-20
Revision:           03
CVE Names:          CVE-2025-22868
====================================================================

Summary: 

Gatekeeper v3.15.4




Description:

Gatekeeper v3.15.4

Gatekeeper is a validating webhook with auditing capabilities that can
enforce custom resource definition-based policies that are run with the
Open Policy Agent (OPA). Gatekeeper is supported through a Red Hat Advanced
Cluster Management for Kubernetes subscription.

Starting in v3.15, the following namespaces are exempt from admission control:

- kube-*
- multicluster-engine
- hypershift
- hive
- rhacs-operator
- open-cluster-*
- openshift-*

To disable the default exempt namespaces, set the namespaces you want on the
object.

Security fix(es):

* golang.org/x/oauth2: Unexpected memory consumption during token parsing in golang.org/x/oauth2 (CVE-2025-22868)
* golang.org/x/crypto/ssh: Denial of Service in the Key Exchange of golang.org/x/crypto/ssh (CVE-2025-22869)

Additional Release Notes:

* v3.15.0 https://github.com/open-policy-agent/gatekeeper/releases/tag/v3.15.0
* v3.15.1 https://github.com/open-policy-agent/gatekeeper/releases/tag/v3.15.1


Solution:

https://access.redhat.com/products/red-hat-advanced-cluster-management-for-kubernetes.



CVEs:

CVE-2025-22868

References:

https://access.redhat.com/security/updates/classification/#important
https://github.com/open-policy-agent/gatekeeper/releases/tag/v3.15.0
https://github.com/open-policy-agent/gatekeeper/releases/tag/v3.15.1
https://bugzilla.redhat.com/show_bug.cgi?id=2348366
https://bugzilla.redhat.com/show_bug.cgi?id=2348367
https://issues.redhat.com/browse/ACM-18305
https://issues.redhat.com/browse/ACM-18536
https://issues.redhat.com/browse/HYPBLD-606