RHSA-2026:5142 - Security Advisory

Topic

Red Hat OpenShift Container Platform release 4.20.17 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 4.20.

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

https://access.redhat.com/errata/RHBA-2026:5140

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/4.20/html/release_notes/

Solution

For OpenShift Container Platform 4.20 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/4.20/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:e0e62ca0bf43f7e9c18551fb8907c882c60cfa0c76392d3a8115a628da02d693

(For s390x architecture)
The image digest is sha256:d468783ef1d0d6ca66d14856d0ea8615deba9c87b6e8638996fe31170c3b93da

(For ppc64le architecture)
The image digest is sha256:cec4ff75a5cd9304b5ba95abd858cd9483934c55d1d2ea34623d1685ad9795e2

(For aarch64 architecture)
The image digest is sha256:4a3cdf5cb6ea8ab473307a61ad8599b92f710f142da2a60ff5c26d3571d85a25

All OpenShift Container Platform 4.20 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/4.20/html-single/updating_clusters/index#updating-cluster-cli.

Fixes

• BZ - 2407258
• BZ - 2427941
• BZ - 2438237
• OCPBUGS-45027 - [WINC-545]No Events Generated After Changing openshift.io/cluster-monitoring Label
• OCPBUGS-51139 - Taking a snapshot of byte-precision sized PVC fails
• OCPBUGS-55785 - operators should not create watch channels very often regression
• OCPBUGS-56072 - RAN reference config uses wrong disk path
• OCPBUGS-56246 - [CI] e2e-openstack-ccpmso-zone and e2e-openstack-ccpmso fail due to timeouts
• OCPBUGS-56789 - PolicyGenTemplate generates PlacementRules arrays random order
• OCPBUGS-57188 - [ExternalDNS] Fix failing test relying on example.com domain resolution
• OCPBUGS-57330 - [ExternalDNS] e2e-aws-shared-vpc-phz-operator fails due to missing AWS credentials
• OCPBUGS-57475 - [ALBO] Intermittent issue with operator secret provisioning in CI presubmits
• OCPBUGS-58895 - Watch counts still marginally off on vsphere in 4.20
• OCPBUGS-59237 - [CI] error converting to options: suite "experimental/reliability/minimal" does not exist
• OCPBUGS-59800 - [NFV][DPDK][Mellanox][OpenStack] Pod testpmd-host-device-dpdk did not successfully deploy
• OCPBUGS-60454 - [CI][sig-cluster-lifecycle][Feature:Machines] Managed cluster should [sig-scheduling][Early] control plane machine set operator should not cause an early rollout [Suite:openshift/conformance/parallel]
• OCPBUGS-60966 - cluster compare template for DisconnectedIDMS fails for empty .spec
• OCPBUGS-63402 - [4.20][BUG] TwistLock Defender restarts trigger catastrophic VG-Manager lock contention causing 26,000 log lines/second until disk space exhaustion and cluster-wide failure
• OCPBUGS-65682 - ignition-server pods are frequently restarting
• OCPBUGS-70229 - [4.20] Secondary Scheduler is failing to watch resourceclaims objects
• OCPBUGS-73912 - Disabling chrony according to RDS leads to problems with chrony-wait.service
• OCPBUGS-74338 - [OCP 4.20] Limitation in KubevirtMachine object to only hold 1 ip address in dual-stack environments
• OCPBUGS-74405 - [4.20] Unable to provision NVIDIA DGX B200 nodes via ACM, Redfish VirtualMedia InsertMedia request fails with missing UserName/Password parameters
• OCPBUGS-74490 - Collection profile minimal leads to ControlPlaneStatus "unknown" in console
• OCPBUGS-76324 - [Backport 4.20] Enable CVO access to OBO Prometheus for ROSA HCP with RHOBS monitoring
• OCPBUGS-76340 - After upgrade to 4.20.10, ironic-proxy pods are in CrashLoopBackOff due to read-only file system
• OCPBUGS-76562 - [openshift-4.20] ptp-operator can't be built hermetically
• OCPBUGS-76790 - MAPO unit tests fail
• OCPBUGS-76916 - Disable mgag200 video driver for RAN profiles
• OCPBUGS-76939 - clockClass is missing for T-BC
• OCPBUGS-76992 - [4.20] Large batch of UDN NetworkSegmentation tests permafailing on hypershift kubevirt aws job
• OCPBUGS-77064 - Massive MCO container causing memory problems during bootstrapping
• OCPBUGS-77346 - e830 plugin must ignore Carter Flats DPLL if present in kernel
• OCPBUGS-77366 - ignition-server pods are frequently restarting
• OCPBUGS-77416 - oc-mirror v2 fails with "unknown userid" error in containerized environments
• OCPBUGS-77476 - Bump to Kubernetes v1.33.9
• OCPBUGS-77482 - Remove obsolete cert-manager config from 4.20 Hub CRs
• OCPBUGS-77541 - Hub RDS 4.20 needs acm/mce version update in mirroring config
• OCPBUGS-77548 - multus-networkpolicy image contains huge dnf cache
• OCPBUGS-77566 - [release-4.20] insights-runtime-extractor image contains huge dnf cache
• OCPBUGS-77582 - OLM's unpack-bundles and marketplace-operator NetworkPolicy is not compatible with HyperShift's KAS port customization
• OCPBUGS-77590 - Hub RDS is missing permissions for ClusterLogging CRs
• OCPBUGS-77665 - [Automated] Update AMI Whitelist
• OCPBUGS-77776 - Update MCN tests to better handle condition transitions through the "Unknown" state
• OCPBUGS-77883 - Component Readiness: [Machine Config Operator] [operator-conditions] MCO incorrectly map MachineSets to failure domains, resulting in datacenter lookup failures and installation timeouts
• OCPBUGS-77950 - [Automated] Update AMI Whitelist
• OCPBUGS-77951 - [release-4.20] Unable to save modified project access in developer view when not quick enough
• OCPBUGS-77958 - Update NetworkPolicy egress in OLM to support HyperShift custom API ports
• OCPBUGS-78025 - [release-4.20] Component Readiness: [Serial] [sig-auth][Feature:OAuthServer] [RequestHeaders] [IdP] test RequestHeaders IdP
• OCPBUGS-78047 - [release-4.21] Etcd Operator should attempt to scale down replicas in the same AZ first
• OCPBUGS-78049 - cluster-version-operator no-op reconciling kube-rbac-proxy ConfigMap
• OCPBUGS-78084 - Tests fail to run on ubi-minimal base images
• OCPBUGS-78091 - installer should recognize new WavelengthZone format
• OCPBUGS-78247 - [4.20] workloadhints: use IsVM to skip BM-only tests

CVEs

• CVE-2026-25639

References

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