Red Hat Security Advisory: Red Hat OpenShift Service Mesh 3.1.8
Red Hat OpenShift Service Mesh 3. 1. 8 addresses multiple security vulnerabilities related to memory corruption, interface conversion bypass, and denial of service in certificate chain building within components based on the Istio project. These issues affect several Istio components including the operator, proxy, pilot, and CNI on RHEL9. The advisory indicates these vulnerabilities have a high severity impact and are fixed in this release. No known exploits are reported in the wild. The update is available from Red Hat with official remediation.
AI Analysis
Technical Summary
Red Hat OpenShift Service Mesh 3.1.8, based on the open source Istio project, fixes several security vulnerabilities: CVE-2026-27143 involves possible memory corruption after bound check elimination; CVE-2026-27144 concerns a no-op interface conversion that bypasses overlap checking; and CVE-2026-32280 is a Go language denial of service vulnerability in certificate chain building. These vulnerabilities affect multiple Istio components on RHEL9 including istio-rhel9-operator, istio-proxyv2-rhel9, istio-pilot-rhel9, and istio-cni-rhel9. The advisory from Red Hat classifies the security impact as Important (high severity) and provides updated images and documentation for remediation.
Potential Impact
The vulnerabilities could lead to memory corruption and denial of service conditions within the affected Istio components of Red Hat OpenShift Service Mesh, potentially disrupting microservice communication or control plane operations. The no-op interface conversion bypass may allow unintended behavior in overlap checking, which could affect system integrity. However, there are no reports of active exploitation in the wild at this time.
Mitigation Recommendations
Red Hat has released OpenShift Service Mesh 3.1.8 which includes fixes for these vulnerabilities. Users should upgrade to this version to remediate the issues. The vendor advisory provides updated container images and documentation for applying the update. Since this is not a cloud service, remediation requires user action to deploy the updated version. Patch status is confirmed by the vendor advisory as an official fix.
Red Hat Security Advisory: Red Hat OpenShift Service Mesh 3.1.8
Description
Red Hat OpenShift Service Mesh 3. 1. 8 addresses multiple security vulnerabilities related to memory corruption, interface conversion bypass, and denial of service in certificate chain building within components based on the Istio project. These issues affect several Istio components including the operator, proxy, pilot, and CNI on RHEL9. The advisory indicates these vulnerabilities have a high severity impact and are fixed in this release. No known exploits are reported in the wild. The update is available from Red Hat with official remediation.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Red Hat OpenShift Service Mesh 3.1.8, based on the open source Istio project, fixes several security vulnerabilities: CVE-2026-27143 involves possible memory corruption after bound check elimination; CVE-2026-27144 concerns a no-op interface conversion that bypasses overlap checking; and CVE-2026-32280 is a Go language denial of service vulnerability in certificate chain building. These vulnerabilities affect multiple Istio components on RHEL9 including istio-rhel9-operator, istio-proxyv2-rhel9, istio-pilot-rhel9, and istio-cni-rhel9. The advisory from Red Hat classifies the security impact as Important (high severity) and provides updated images and documentation for remediation.
Potential Impact
The vulnerabilities could lead to memory corruption and denial of service conditions within the affected Istio components of Red Hat OpenShift Service Mesh, potentially disrupting microservice communication or control plane operations. The no-op interface conversion bypass may allow unintended behavior in overlap checking, which could affect system integrity. However, there are no reports of active exploitation in the wild at this time.
Mitigation Recommendations
Red Hat has released OpenShift Service Mesh 3.1.8 which includes fixes for these vulnerabilities. Users should upgrade to this version to remediate the issues. The vendor advisory provides updated container images and documentation for applying the update. Since this is not a cloud service, remediation requires user action to deploy the updated version. Patch status is confirmed by the vendor advisory as an official fix.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:16505
- Cve Count
- 3
- Additional Cves
- ["CVE-2026-27144","CVE-2026-32280"]
- Cvss Version
- null
Threat ID: 6a16097be29bf47b50647bae
Added to database: 5/26/2026, 8:58:35 PM
Last enriched: 5/26/2026, 11:05:23 PM
Last updated: 5/27/2026, 5:01:37 AM
Views: 2
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