Red Hat Security Advisory: OpenShift Container Platform 4.19.27 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 4.19.27. See the following advisory for the container images for this release: https://access.redhat.com/errata/RHSA-2026:5878 Security Fix(es): * golang: archive/tar: Unbounded allocation when parsing GNU sparse map (CVE-2025-58183) * crypto/tls: Unexpected session resumption in crypto/tls (CVE-2025-68121) 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 covers security fixes in Red Hat OpenShift Container Platform 4.19.27, specifically addressing CVE-2025-58183, an unbounded allocation vulnerability in the golang archive/tar package when parsing GNU sparse maps, and CVE-2025-68121, an unexpected session resumption issue in the crypto/tls package. Both vulnerabilities have been assigned a moderate security impact by Red Hat. The advisory provides updated RPM packages and container images to resolve these issues. Users should upgrade their OpenShift Container Platform 4.19 clusters using the recommended procedures to apply these fixes.
Potential Impact
The vulnerabilities could lead to unbounded memory allocation potentially causing resource exhaustion (CVE-2025-58183) and unexpected session resumption in TLS connections (CVE-2025-68121), which may affect the security and stability of the OpenShift Container Platform environment. Red Hat rates these issues as moderate impact, indicating a significant but not critical risk to affected systems.
Mitigation Recommendations
Red Hat has released updated packages and container images in OpenShift Container Platform 4.19.27 that address these vulnerabilities. Users should upgrade to these updated versions via the OpenShift CLI or web console following Red Hat's documented cluster upgrade procedures. No alternative mitigations or workarounds are specified; applying the official update is the recommended remediation.
Red Hat Security Advisory: OpenShift Container Platform 4.19.27 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 4.19.27. See the following advisory for the container images for this release: https://access.redhat.com/errata/RHSA-2026:5878 Security Fix(es): * golang: archive/tar: Unbounded allocation when parsing GNU sparse map (CVE-2025-58183) * crypto/tls: Unexpected session resumption in crypto/tls (CVE-2025-68121) 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
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This advisory covers security fixes in Red Hat OpenShift Container Platform 4.19.27, specifically addressing CVE-2025-58183, an unbounded allocation vulnerability in the golang archive/tar package when parsing GNU sparse maps, and CVE-2025-68121, an unexpected session resumption issue in the crypto/tls package. Both vulnerabilities have been assigned a moderate security impact by Red Hat. The advisory provides updated RPM packages and container images to resolve these issues. Users should upgrade their OpenShift Container Platform 4.19 clusters using the recommended procedures to apply these fixes.
Potential Impact
The vulnerabilities could lead to unbounded memory allocation potentially causing resource exhaustion (CVE-2025-58183) and unexpected session resumption in TLS connections (CVE-2025-68121), which may affect the security and stability of the OpenShift Container Platform environment. Red Hat rates these issues as moderate impact, indicating a significant but not critical risk to affected systems.
Mitigation Recommendations
Red Hat has released updated packages and container images in OpenShift Container Platform 4.19.27 that address these vulnerabilities. Users should upgrade to these updated versions via the OpenShift CLI or web console following Red Hat's documented cluster upgrade procedures. No alternative mitigations or workarounds are specified; applying the official update is the recommended remediation.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:5876
- Cve Count
- 2
- Additional Cves
- ["CVE-2025-68121"]
- Cvss Version
- null
Threat ID: 6a160976e29bf47b506411b8
Added to database: 05/26/2026, 20:58:30 UTC
Last enriched: 07/30/2026, 10:14:34 UTC
Last updated: 07/31/2026, 19:30:10 UTC
Views: 81
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