Red Hat Security Advisory: OpenShift Container Platform 4.16.55 bug fix and security update
Red Hat OpenShift Container Platform 4. 16. 55 includes multiple security fixes addressing vulnerabilities in components such as libssh, libarchive, bind, expat, and qemu-kvm. These vulnerabilities include out-of-bounds reads, double free errors, resource exhaustion, cache poisoning, large memory allocations, and use-after-free conditions. The update is rated as having an Important security impact by Red Hat Product Security. Users of OpenShift Container Platform 4. 16 are advised to upgrade to the updated packages and container images available in the appropriate release channels to mitigate these issues.
AI Analysis
Technical Summary
This advisory covers Red Hat OpenShift Container Platform 4.16.55, which contains fixes for seven security vulnerabilities affecting various components. Notable issues include an out-of-bounds read in libssh's sftp_handle (CVE-2025-5318), a double free in libarchive (CVE-2025-5914), resource exhaustion and cache poisoning vulnerabilities in bind (CVE-2025-8677, CVE-2025-40778, CVE-2025-40780), large dynamic memory allocation triggered by libexpat (CVE-2025-59375), and a use-after-free in qemu-kvm's VNC WebSocket handshake (CVE-2025-11234). These vulnerabilities impact the OpenShift Container Platform 4.16 release for multiple architectures including x86_64, s390x, ppc64le, and aarch64. The advisory recommends upgrading to the updated container images and RPM packages as soon as they are available.
Potential Impact
The vulnerabilities fixed in this update could lead to various security issues such as memory corruption (double free, use-after-free), out-of-bounds reads, resource exhaustion, and cache poisoning attacks. These could potentially affect the stability, confidentiality, and integrity of the affected OpenShift Container Platform deployments. The advisory rates the overall security impact as Important, indicating a high severity level but not critical. There are no known exploits in the wild at the time of this advisory.
Mitigation Recommendations
Red Hat has released updated container images and RPM packages for OpenShift Container Platform 4.16.55 that address these vulnerabilities. Users should upgrade to these updated packages and images via the appropriate release channels using the OpenShift CLI (oc) or web console. Detailed upgrade instructions are available in the official Red Hat documentation. No alternative mitigations or workarounds are indicated in the vendor advisory.
Red Hat Security Advisory: OpenShift Container Platform 4.16.55 bug fix and security update
Description
Red Hat OpenShift Container Platform 4. 16. 55 includes multiple security fixes addressing vulnerabilities in components such as libssh, libarchive, bind, expat, and qemu-kvm. These vulnerabilities include out-of-bounds reads, double free errors, resource exhaustion, cache poisoning, large memory allocations, and use-after-free conditions. The update is rated as having an Important security impact by Red Hat Product Security. Users of OpenShift Container Platform 4. 16 are advised to upgrade to the updated packages and container images available in the appropriate release channels to mitigate these issues.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This advisory covers Red Hat OpenShift Container Platform 4.16.55, which contains fixes for seven security vulnerabilities affecting various components. Notable issues include an out-of-bounds read in libssh's sftp_handle (CVE-2025-5318), a double free in libarchive (CVE-2025-5914), resource exhaustion and cache poisoning vulnerabilities in bind (CVE-2025-8677, CVE-2025-40778, CVE-2025-40780), large dynamic memory allocation triggered by libexpat (CVE-2025-59375), and a use-after-free in qemu-kvm's VNC WebSocket handshake (CVE-2025-11234). These vulnerabilities impact the OpenShift Container Platform 4.16 release for multiple architectures including x86_64, s390x, ppc64le, and aarch64. The advisory recommends upgrading to the updated container images and RPM packages as soon as they are available.
Potential Impact
The vulnerabilities fixed in this update could lead to various security issues such as memory corruption (double free, use-after-free), out-of-bounds reads, resource exhaustion, and cache poisoning attacks. These could potentially affect the stability, confidentiality, and integrity of the affected OpenShift Container Platform deployments. The advisory rates the overall security impact as Important, indicating a high severity level but not critical. There are no known exploits in the wild at the time of this advisory.
Mitigation Recommendations
Red Hat has released updated container images and RPM packages for OpenShift Container Platform 4.16.55 that address these vulnerabilities. Users should upgrade to these updated packages and images via the appropriate release channels using the OpenShift CLI (oc) or web console. Detailed upgrade instructions are available in the official Red Hat documentation. No alternative mitigations or workarounds are indicated in the vendor 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-2026:0326
- Cve Count
- 7
- Additional Cves
- ["CVE-2025-5914","CVE-2025-8677","CVE-2025-11234","CVE-2025-40778","CVE-2025-40780","CVE-2025-59375"]
- Cvss Version
- null
Threat ID: 6a175eefe29bf47b50eddd4a
Added to database: 5/27/2026, 9:15:27 PM
Last enriched: 5/27/2026, 9:27:19 PM
Last updated: 5/29/2026, 3:37:54 PM
Views: 11
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