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 addresses security vulnerabilities in Red Hat OpenShift Container Platform versions 4.17 and 4.19. The key fixes include CVE-2025-58183, which involves unbounded memory allocation when parsing GNU sparse map archives in the golang archive/tar package, and CVE-2025-68121, which concerns unexpected or incorrect TLS session resumption behavior in the crypto/tls package. Additional vulnerabilities fixed in 4.17.54 include memory exhaustion and denial of service issues in golang net/url, crypto/x509, pyasn1, and archive/zip packages. The vendor has released updated RPM packages and container images to address these issues. Users should upgrade using the OpenShift CLI or web console following Red Hat's documented procedures.
Potential Impact
The vulnerabilities can lead to unbounded memory allocation, excessive CPU consumption, denial of service, and incorrect TLS session resumption, potentially impacting the stability and security of OpenShift Container Platform deployments. The issues are rated moderate to important in severity by Red Hat Product Security. There are no known exploits in the wild at the time of this advisory.
Mitigation Recommendations
Red Hat has released updated packages for OpenShift Container Platform 4.17.54 and 4.19.27 that fix these vulnerabilities. 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 web console, following the official Red Hat upgrade documentation. No additional mitigations are indicated by the vendor beyond applying these updates.
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
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This advisory addresses security vulnerabilities in Red Hat OpenShift Container Platform versions 4.17 and 4.19. The key fixes include CVE-2025-58183, which involves unbounded memory allocation when parsing GNU sparse map archives in the golang archive/tar package, and CVE-2025-68121, which concerns unexpected or incorrect TLS session resumption behavior in the crypto/tls package. Additional vulnerabilities fixed in 4.17.54 include memory exhaustion and denial of service issues in golang net/url, crypto/x509, pyasn1, and archive/zip packages. The vendor has released updated RPM packages and container images to address these issues. Users should upgrade using the OpenShift CLI or web console following Red Hat's documented procedures.
Potential Impact
The vulnerabilities can lead to unbounded memory allocation, excessive CPU consumption, denial of service, and incorrect TLS session resumption, potentially impacting the stability and security of OpenShift Container Platform deployments. The issues are rated moderate to important in severity by Red Hat Product Security. There are no known exploits in the wild at the time of this advisory.
Mitigation Recommendations
Red Hat has released updated packages for OpenShift Container Platform 4.17.54 and 4.19.27 that fix these vulnerabilities. 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 web console, following the official Red Hat upgrade documentation. No additional mitigations are indicated by the vendor 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-2026:5876
- Cve Count
- 2
- Additional Cves
- ["CVE-2025-68121"]
- State
- PUBLISHED
Threat ID: 6a160976e29bf47b506411b8
Added to database: 05/26/2026, 20:58:30 UTC
Last enriched: 08/14/2026, 19:29:52 UTC
Last updated: 09/14/2026, 10:01:28 UTC
Views: 104
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