Red Hat Security Advisory: OpenShift Container Platform 4.19.25 packages 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 RPM packages for Red Hat OpenShift Container Platform 4.19.25. See the following advisory for the container images for this release: https://access.redhat.com/errata/RHBA-2026:3394 Security Fix(es): * runc: opencontainers/selinux: container escape and denial of service due to arbitrary write gadgets and procfs write redirects (CVE-2025-52881) * golang: net/url: Memory exhaustion in query parameter parsing in net/url (CVE-2025-61726) 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.
AI Analysis
Technical Summary
This advisory addresses two security vulnerabilities in Red Hat OpenShift Container Platform 4.19. The first, CVE-2025-52881, involves the runc component's opencontainers/selinux integration, which allows container escape and denial of service via arbitrary write gadgets and procfs write redirects. The second, CVE-2025-61726, is a memory exhaustion vulnerability in the Go language net/url package during query parameter parsing. The update to version 4.19.25 includes RPM packages and container images that fix these issues. The advisory recommends upgrading OpenShift Container Platform 4.19 clusters to 4.19.25 using the OpenShift CLI or web console.
Potential Impact
Successful exploitation of CVE-2025-52881 could allow an attacker to escape container isolation and cause denial of service on the host system. CVE-2025-61726 could lead to memory exhaustion during URL query parsing, potentially causing denial of service. Both vulnerabilities pose significant risks to the confidentiality, integrity, and availability of affected OpenShift Container Platform 4.19 deployments.
Mitigation Recommendations
A fix is available in Red Hat OpenShift Container Platform version 4.19.25. Users should upgrade to this version using the OpenShift CLI or web console as soon as it is available in their release channel. Detailed upgrade instructions are provided by Red Hat in their official documentation. No alternative mitigations are specified in the advisory.
Red Hat Security Advisory: OpenShift Container Platform 4.19.25 packages 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 RPM packages for Red Hat OpenShift Container Platform 4.19.25. See the following advisory for the container images for this release: https://access.redhat.com/errata/RHBA-2026:3394 Security Fix(es): * runc: opencontainers/selinux: container escape and denial of service due to arbitrary write gadgets and procfs write redirects (CVE-2025-52881) * golang: net/url: Memory exhaustion in query parameter parsing in net/url (CVE-2025-61726) 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.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This advisory addresses two security vulnerabilities in Red Hat OpenShift Container Platform 4.19. The first, CVE-2025-52881, involves the runc component's opencontainers/selinux integration, which allows container escape and denial of service via arbitrary write gadgets and procfs write redirects. The second, CVE-2025-61726, is a memory exhaustion vulnerability in the Go language net/url package during query parameter parsing. The update to version 4.19.25 includes RPM packages and container images that fix these issues. The advisory recommends upgrading OpenShift Container Platform 4.19 clusters to 4.19.25 using the OpenShift CLI or web console.
Potential Impact
Successful exploitation of CVE-2025-52881 could allow an attacker to escape container isolation and cause denial of service on the host system. CVE-2025-61726 could lead to memory exhaustion during URL query parsing, potentially causing denial of service. Both vulnerabilities pose significant risks to the confidentiality, integrity, and availability of affected OpenShift Container Platform 4.19 deployments.
Mitigation Recommendations
A fix is available in Red Hat OpenShift Container Platform version 4.19.25. Users should upgrade to this version using the OpenShift CLI or web console as soon as it is available in their release channel. Detailed upgrade instructions are provided by Red Hat in their official documentation. No alternative mitigations are specified in the advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:3391
- Cve Count
- 2
- Additional Cves
- ["CVE-2025-61726"]
- State
- PUBLISHED
Threat ID: 6a16096ae29bf47b50630c8c
Added to database: 05/26/2026, 20:58:18 UTC
Last enriched: 08/14/2026, 20:13:26 UTC
Last updated: 09/13/2026, 10:01:28 UTC
Views: 93
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