Red Hat Security Advisory: OpenShift Container Platform 4.18.31 bug fix and security update
Red Hat OpenShift Container Platform 4. 18. 31 includes multiple security fixes addressing vulnerabilities in components such as bind, libexpat, OpenSSL, and qemu-kvm. These issues range from resource exhaustion and cache poisoning in DNS handling to out-of-bounds memory access and use-after-free bugs. The update is rated as having an Important security impact by Red Hat Product Security. Users of OpenShift Container Platform 4. 18 are advised to upgrade to the fixed packages and container images via the official release channels and tools.
AI Analysis
Technical Summary
This advisory covers Red Hat OpenShift Container Platform 4.18.31, which addresses six security vulnerabilities: CVE-2025-8677 (bind resource exhaustion via malformed DNSKEY handling), CVE-2025-40778 (bind cache poisoning with unsolicited resource records), CVE-2025-40780 (bind cache poisoning due to weak PRNG), CVE-2025-59375 (libexpat large dynamic memory allocations triggered by small XML documents), CVE-2025-9230 (OpenSSL out-of-bounds read and write in RFC 3211 KEK unwrap), and CVE-2025-11234 (qemu-kvm VNC WebSocket handshake use-after-free). These vulnerabilities affect various architectures and are fixed in updated container images and RPM packages. Red Hat provides upgrade instructions and advises users to apply these updates promptly.
Potential Impact
The vulnerabilities fixed in this update can lead to resource exhaustion, cache poisoning attacks, large memory allocations potentially causing denial of service, out-of-bounds memory access, and use-after-free conditions. These issues could impact the stability and security of OpenShift Container Platform deployments. Red Hat rates the overall security impact of this update as Important (high severity). 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 4.18.31 that address these vulnerabilities. Users should upgrade to these updated packages and images through the appropriate release channels using the OpenShift CLI (oc) or web console. Detailed upgrade instructions are available in Red Hat's official documentation. Since this is an official fix, applying the update fully mitigates the described vulnerabilities.
Red Hat Security Advisory: OpenShift Container Platform 4.18.31 bug fix and security update
Description
Red Hat OpenShift Container Platform 4. 18. 31 includes multiple security fixes addressing vulnerabilities in components such as bind, libexpat, OpenSSL, and qemu-kvm. These issues range from resource exhaustion and cache poisoning in DNS handling to out-of-bounds memory access and use-after-free bugs. The update is rated as having an Important security impact by Red Hat Product Security. Users of OpenShift Container Platform 4. 18 are advised to upgrade to the fixed packages and container images via the official release channels and tools.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This advisory covers Red Hat OpenShift Container Platform 4.18.31, which addresses six security vulnerabilities: CVE-2025-8677 (bind resource exhaustion via malformed DNSKEY handling), CVE-2025-40778 (bind cache poisoning with unsolicited resource records), CVE-2025-40780 (bind cache poisoning due to weak PRNG), CVE-2025-59375 (libexpat large dynamic memory allocations triggered by small XML documents), CVE-2025-9230 (OpenSSL out-of-bounds read and write in RFC 3211 KEK unwrap), and CVE-2025-11234 (qemu-kvm VNC WebSocket handshake use-after-free). These vulnerabilities affect various architectures and are fixed in updated container images and RPM packages. Red Hat provides upgrade instructions and advises users to apply these updates promptly.
Potential Impact
The vulnerabilities fixed in this update can lead to resource exhaustion, cache poisoning attacks, large memory allocations potentially causing denial of service, out-of-bounds memory access, and use-after-free conditions. These issues could impact the stability and security of OpenShift Container Platform deployments. Red Hat rates the overall security impact of this update as Important (high severity). 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 4.18.31 that address these vulnerabilities. Users should upgrade to these updated packages and images through the appropriate release channels using the OpenShift CLI (oc) or web console. Detailed upgrade instructions are available in Red Hat's official documentation. Since this is an official fix, applying the update fully mitigates the described vulnerabilities.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:0332
- Cve Count
- 6
- Additional Cves
- ["CVE-2025-9230","CVE-2025-11234","CVE-2025-40778","CVE-2025-40780","CVE-2025-59375"]
- Cvss Version
- null
Threat ID: 6a175eefe29bf47b50eddd3e
Added to database: 5/27/2026, 9:15:27 PM
Last enriched: 5/27/2026, 9:27:04 PM
Last updated: 5/29/2026, 10:03:52 AM
Views: 11
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