RHSA-2026:57401: Important: OpenShift Container Platform 4.19.44 packages and security update
Important: OpenShift Container Platform 4.19.44 packages and security update
Other sources
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 RPM packages for Red Hat OpenShift Container Platform 4.19.44. See the following advisory for the container images for this release:https://access.redhat.com/errata/RHSA-2026:57408 Security Fix(es): net/mail: golang: Go net/mail: Denial of Service via crafted email inputs (CVE-2026-39820) 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/openshiftcontainerplatform/4.19/html-single/updatingclusters/index#updating-cluster-cli.
— Red Hat
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
redhat/cri-oto a version that resolves this vulnerability.Fixed in 1.32.13-10.rhaos4.19.git1f1b94a.el9 - Upgrade
Upgrade
redhat/kata-containersto a version that resolves this vulnerability.Fixed in 3.31.0-5.rhaos4.19.el9 - Upgrade
Upgrade
redhat/openshift-clientsto a version that resolves this vulnerability.Fixed in 4.19.0-202608181135.p2.g522f35a.assembly.stream.el9 - Upgrade
Upgrade
redhat/cri-o-debuginfoto a version that resolves this vulnerability.Fixed in 1.32.13-10.rhaos4.19.git1f1b94a.el9 - Upgrade
Upgrade
redhat/cri-o-debugsourceto a version that resolves this vulnerability.Fixed in 1.32.13-10.rhaos4.19.git1f1b94a.el9 - Upgrade
Upgrade
redhat/openshift-clients-redistributableto a version that resolves this vulnerability.Fixed in 4.19.0-202608181135.p2.g522f35a.assembly.stream.el9 - Upgrade
Upgrade
redhat/openshift-clientsto a version that resolves this vulnerability.Fixed in 4.19.0-202608181135.p2.g522f35a.assembly.stream.el8 - Upgrade
Upgrade
redhat/openshift-clients-redistributableto a version that resolves this vulnerability.Fixed in 4.19.0-202608181135.p2.g522f35a.assembly.stream.el8 - Upgrade
Upgrade
redhat/cri-oto a version that resolves this vulnerability.Fixed in 1.32.13-10.rhaos4.19.git1f1b94a.el9.aa - Upgrade
Upgrade
redhat/cri-o-debuginfoto a version that resolves this vulnerability.Fixed in 1.32.13-10.rhaos4.19.git1f1b94a.el9.aa - Upgrade
Upgrade
redhat/cri-o-debugsourceto a version that resolves this vulnerability.Fixed in 1.32.13-10.rhaos4.19.git1f1b94a.el9.aa - Upgrade
Upgrade
redhat/kata-containersto a version that resolves this vulnerability.Fixed in 3.31.0-5.rhaos4.19.el9.aa - Upgrade
Upgrade
redhat/openshift-clientsto a version that resolves this vulnerability.Fixed in 4.19.0-202608181135.p2.g522f35a.assembly.stream.el9.aa - Upgrade
Upgrade
redhat/openshift-clientsto a version that resolves this vulnerability.Fixed in 4.19.0-202608181135.p2.g522f35a.assembly.stream.el8.aa - Upgrade
Upgrade
Red Hat OpenShift Container Platform 4.19to a version that resolves this vulnerability.Fixed in 4.19.44 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch RHSA-2026:57408
Event History
Frequently Asked Questions
Which deployments should prioritize this update?
All Red Hat OpenShift Container Platform 4.19 users should upgrade to the updated packages and images when they become available in their release channel. The advisory applies to OpenShift Container Platform, including the IBM Z and LinuxONE offering listed in the affected software.
What is required to exploit the security issue?
The issue is a denial of service in Go's net/mail package triggered by crafted email inputs. The advisory does not specify the affected OpenShift component, exposure path, or privileges required by an attacker.
Are container images included in this advisory?
This advisory provides RPM packages for OpenShift Container Platform 4.19.44. The corresponding container images are covered by RHSA-2026:57408 and should also be upgraded.
How can I check for and apply the update?
Check for available updates using the OpenShift CLI (oc) or the web console, then upgrade the cluster through the appropriate release channel. The advisory recommends upgrading both the updated packages and images.