RHSA-2026:63044 - Security Advisory

Topic

Red Hat OpenShift Container Platform release 4.19.46 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 4.19.

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

https://access.redhat.com/errata/RHBA-2026:63043

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/4.19/html/release_notes/

Security Fix(es):

• dracut: dracut: Root code execution via DHCP options command injection (CVE-2026-6893)
• librenswan: IKEv2 Denial of Service via malformed fragmentation (CVE-2026-12413)
• dracut: dracut: root code execution via unescaped error message written to sourced emergency hook script in die() (CVE-2026-15816)
• sg3_utils: sg3_utils: arbitrary command execution via udev property injection in sg_inq --export (CVE-2026-16313)
• libarchive: Double-Free Vulnerability in RAR5 Decompression Logic via dangling filtered_buf pointer in init_unpack() (CVE-2026-14164)
• libreswan: badly formatted X.509 certificate can cause an assertion failure that crashes the daemon process (CVE-2026-14957)
• librenswan: IKEv1 Denial of Service via RSA-SHA1 (PKCS#1 Version 1.5 Encrypted) authentication payload (CVE-2026-50721)
• librenswan: IKEv2 Denial of Service via RSA-SHA1 (PKCS#1 RSASSA-PKCS1-v1_5) authentication payload (CVE-2026-50722)

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 4.19 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/4.19/html-single/updating_clusters/index#updating-cluster-cli.

Solution

For OpenShift Container Platform 4.19 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/4.19/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 sha256:7c2a7b3f4b11fb7b217f196d8f4e6a3385beb7c15275b941a27249263c60a3bc

(For s390x architecture)
The image digest is sha256:689909e6a2fc8eac872a9ceeabf4f9ebf1d77551617151a54561fb10f776e010

(For ppc64le architecture)
The image digest is sha256:b5bfa7d60cfca5fbf544d025e18b27fe1d98b7425a9fa22808eaa0b483c505a4

(For aarch64 architecture)
The image digest is sha256:dfbf625ebb1addd1234392fad233b882ff5e683b2f037ab3a50bf1aabf1541cd

All OpenShift Container Platform 4.19 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/4.19/html-single/updating_clusters/index#updating-cluster-cli.

Affected Products

• Red Hat OpenShift Container Platform 4.19 for RHEL 9 x86_64
• Red Hat OpenShift Container Platform 4.19 for RHEL 8 x86_64
• Red Hat OpenShift Container Platform for Power 4.19 for RHEL 9 ppc64le
• Red Hat OpenShift Container Platform for Power 4.19 for RHEL 8 ppc64le
• Red Hat OpenShift Container Platform for IBM Z and LinuxONE 4.19 for RHEL 9 s390x
• Red Hat OpenShift Container Platform for IBM Z and LinuxONE 4.19 for RHEL 8 s390x
• Red Hat OpenShift Container Platform for ARM 64 4.19 for RHEL 9 aarch64
• Red Hat OpenShift Container Platform for ARM 64 4.19 for RHEL 8 aarch64

Fixes

• BZ - 2459963 - CVE-2026-6893 dracut: dracut: Root code execution via DHCP options command injection
• BZ - 2493411 - CVE-2026-14164 libarchive: Double-Free Vulnerability in RAR5 Decompression Logic via dangling filtered_buf pointer in init_unpack()
• BZ - 2494147 - CVE-2026-50721 librenswan: IKEv1 Denial of Service via RSA-SHA1 (PKCS#1 Version 1.5 Encrypted) authentication payload
• BZ - 2494148 - CVE-2026-50722 librenswan: IKEv2 Denial of Service via RSA-SHA1 (PKCS#1 RSASSA-PKCS1-v1_5) authentication payload
• BZ - 2494149 - CVE-2026-12413 librenswan: IKEv2 Denial of Service via malformed fragmentation
• BZ - 2500889 - CVE-2026-15816 dracut: dracut: root code execution via unescaped error message written to sourced emergency hook script in die()
• BZ - 2501764 - CVE-2026-14957 libreswan: badly formatted X.509 certificate can cause an assertion failure that crashes the daemon process
• BZ - 2502845 - CVE-2026-16313 sg3_utils: sg3_utils: arbitrary command execution via udev property injection in sg_inq --export
• OCPBUGS-113537 - [4.19] Bootimage bump tracker

CVEs

• CVE-2026-6893
• CVE-2026-12413
• CVE-2026-14164
• CVE-2026-14957
• CVE-2026-15816
• CVE-2026-16313
• CVE-2026-50721
• CVE-2026-50722

References

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