Red Hat Security Advisory: OpenShift Container Platform 4.18.11 bug fix and security update
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 4.18.11. See the following advisory for the RPM packages for this release: https://access.redhat.com/errata/RHBA-2025:4213 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/4.18/html/release_notes/ Security Fix(es): * golang-jwt/jwt: jwt-go allows excessive memory allocation during header parsing (CVE-2025-30204) * cri-o: Checkpoint restore can be triggered from different namespaces (CVE-2024-8676) * go-jose: Go JOSE's Parsing Vulnerable to Denial of Service (CVE-2025-27144) 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 4.18 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/4.18/html-single/updating_clusters/index#updating-cluster-cli.
AI Analysis
Technical Summary
This advisory covers security updates in Red Hat OpenShift Container Platform releases 4.18.11, 4.17.24, and 4.16.44 that fix several vulnerabilities. Notably, CVE-2024-8676 in the cri-o component allows checkpoint restore operations to be triggered from different namespaces, potentially leading to unauthorized actions. Additional fixes address denial of service vulnerabilities in JWT parsing libraries (CVE-2025-30204 and CVE-2025-27144). The advisory provides updated container images and RPM packages for affected versions and instructs users to upgrade to these patched releases. The vulnerabilities have been rated with a high security impact by Red Hat Product Security.
Potential Impact
The vulnerabilities fixed in these updates could allow unauthorized checkpoint restore operations across namespaces and denial of service conditions via malformed JWT or JOSE parsing. This could impact the security and stability of Kubernetes clusters running affected OpenShift Container Platform versions. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
Red Hat has released official fixes in OpenShift Container Platform versions 4.18.11, 4.17.24, and 4.16.44. Users should upgrade to these versions as soon as they are available in their release channels. Upgrades can be performed using the OpenShift CLI (oc) or the web console following Red Hat's documented procedures. No additional mitigation steps are required beyond applying these updates.
Red Hat Security Advisory: OpenShift Container Platform 4.18.11 bug fix and security update
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 4.18.11. See the following advisory for the RPM packages for this release: https://access.redhat.com/errata/RHBA-2025:4213 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/4.18/html/release_notes/ Security Fix(es): * golang-jwt/jwt: jwt-go allows excessive memory allocation during header parsing (CVE-2025-30204) * cri-o: Checkpoint restore can be triggered from different namespaces (CVE-2024-8676) * go-jose: Go JOSE's Parsing Vulnerable to Denial of Service (CVE-2025-27144) 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 4.18 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/4.18/html-single/updating_clusters/index#updating-cluster-cli.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This advisory covers security updates in Red Hat OpenShift Container Platform releases 4.18.11, 4.17.24, and 4.16.44 that fix several vulnerabilities. Notably, CVE-2024-8676 in the cri-o component allows checkpoint restore operations to be triggered from different namespaces, potentially leading to unauthorized actions. Additional fixes address denial of service vulnerabilities in JWT parsing libraries (CVE-2025-30204 and CVE-2025-27144). The advisory provides updated container images and RPM packages for affected versions and instructs users to upgrade to these patched releases. The vulnerabilities have been rated with a high security impact by Red Hat Product Security.
Potential Impact
The vulnerabilities fixed in these updates could allow unauthorized checkpoint restore operations across namespaces and denial of service conditions via malformed JWT or JOSE parsing. This could impact the security and stability of Kubernetes clusters running affected OpenShift Container Platform versions. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
Red Hat has released official fixes in OpenShift Container Platform versions 4.18.11, 4.17.24, and 4.16.44. Users should upgrade to these versions as soon as they are available in their release channels. Upgrades can be performed using the OpenShift CLI (oc) or the web console following Red Hat's documented procedures. No additional mitigation steps are required beyond applying these updates.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2025:4211
- Cve Count
- 3
- Additional Cves
- ["CVE-2025-27144","CVE-2025-30204"]
Threat ID: 6a160972e29bf47b5063ab28
Added to database: 05/26/2026, 20:58:26 UTC
Last enriched: 08/14/2026, 22:04:50 UTC
Last updated: 09/10/2026, 19:36:49 UTC
Views: 99
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