RHSA-2025:4731 - Security Advisory

Topic

Red Hat OpenShift Container Platform release 4.16.40 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 4.16.

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

https://access.redhat.com/errata/RHBA-2025:4733

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/4.16/html/release_notes/

Security Fix(es):

• libxslt: Use-After-Free in libxslt (xsltGetInheritedNsList)

(CVE-2024-55549)

• libxslt: Use-After-Free in libxslt numbers.c (CVE-2025-24855)

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 4.16 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/4.16/html-single/updating_clusters/index#updating-cluster-cli.

Solution

For OpenShift Container Platform 4.16 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/4.16/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 sha256:9871f990d9f956d735e85e2040101377d5fd7cc4e62e8f54feb62650190216c9

(For s390x architecture)
The image digest is sha256:851bac58b8ba11752792467aca680d41a1b306ba9e4973dca4b79d4adba93e55

(For ppc64le architecture)
The image digest is sha256:cbd719c4e8627d894621ffbfca8adc31669ccfd63411889b58810111bcf34b00

(For aarch64 architecture)
The image digest is sha256:9cd61312dbd5619bed52ea20afb0fb6b6634f4c76394fea5b5187fc4083e8027

All OpenShift Container Platform 4.16 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/4.16]/html-single/updating_clusters/index#updating-cluster-cli.

Affected Products

• Red Hat OpenShift Container Platform 4.16 for RHEL 9 x86_64
• Red Hat OpenShift Container Platform for Power 4.16 for RHEL 9 ppc64le
• Red Hat OpenShift Container Platform for IBM Z and LinuxONE 4.16 for RHEL 9 s390x
• Red Hat OpenShift Container Platform for ARM 64 4.16 for RHEL 9 aarch64

Fixes

• BZ - 2352483 - CVE-2025-24855 libxslt: Use-After-Free in libxslt numbers.c
• BZ - 2352484 - CVE-2024-55549 libxslt: Use-After-Free in libxslt (xsltGetInheritedNsList)
• OCPBUGS-35040 - Power VS: Ports needed for private DNS are missing
• OCPBUGS-35921 - userCA and cloudCA certfiicates are not removed from nodes and ignition config
• OCPBUGS-45142 - Cluster monitoring reports OpenShift Pipelines plugin as unknown
• OCPBUGS-50581 - [release-4.16] UDP packet larger than MTU size can not be sent to its' own pod via the service.
• OCPBUGS-53317 - Roll Back to OpenShift SDN gets stuck during the live migration method
• OCPBUGS-54786 - Backport 3-card T-GM ZTP config
• OCPBUGS-54818 - [4.16] SELinux container_logreader_t cannot watch /var/log symlinks
• OCPBUGS-54914 - Problem with validatingWebhook on Hosted Control Plane
• OCPBUGS-54942 - Prometheus: Scraping: Bump cache iteration after error to avoid false duplicate detections.
• OCPBUGS-54990 - Add status check for Azure NIC provisioning
• OCPBUGS-55119 - Revert "Add delay in linuxptp-daemon to wait for socket to be ready"
• OCPBUGS-55124 - Increasing Clock Class Reporting Frequency
• OCPBUGS-55156 - Panic in cluster version operator code
• OCPBUGS-55163 - [4.16]T-GM announces "Locked" too fast after holdover
• OCPBUGS-55171 - T-GM: traceability flags 0 when clock class 6
• OCPBUGS-55201 - [backport 4.16] metric for ingresswithoutclassname does not decrease when classless ingresses cease to exist
• OCPBUGS-55248 - Component Readiness: [Cloud Compute / Unknown] [Other] test regressed
• OCPBUGS-55345 - BGP+BFD not working properly
• OCPBUGS-55378 - CSR permission should not be a hard requirement for viewing Node tab
• OCPBUGS-55684 - MSBIC should not update windows machinesets

CVEs

• CVE-2023-52492
• CVE-2023-52594
• CVE-2023-52756
• CVE-2023-52813
• CVE-2024-0340
• CVE-2024-11614
• CVE-2024-26840
• CVE-2024-26892
• CVE-2024-35877
• CVE-2024-35912
• CVE-2024-47668
• CVE-2024-53141
• CVE-2024-55549
• CVE-2025-0395
• CVE-2025-24855
• CVE-2025-32050
• CVE-2025-32052
• CVE-2025-32053
• CVE-2025-32906
• CVE-2025-32907
• CVE-2025-32911
• CVE-2025-32913
• CVE-2025-46420
• CVE-2025-46421

References

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