Red Hat Security Advisory: Red Hat OpenShift Service Mesh 3.1.8
Red Hat OpenShift Service Mesh 3.1.8, which is based on the open source Istio project, addresses a variety of problems in a microservice architecture by creating a centralized point of control in an application. Fixes/Improvements: * OSSM 3 Operator icon missing from OperatorHub catalog in OCP console (OSSM-13028) Security Fix(es): * istio-rhel9-operator: possible memory corruption after bound check elimination (CVE-2026-27143) * istio-proxyv2-rhel9: possible memory corruption after bound check elimination (CVE-2026-27143) * istio-pilot-rhel9: possible memory corruption after bound check elimination (CVE-2026-27143) * istio-cni-rhel9: possible memory corruption after bound check elimination (CVE-2026-27143) * istio-rhel9-operator: no-op interface conversion bypasses overlap checking (CVE-2026-27144) * istio-proxyv2-rhel9: no-op interface conversion bypasses overlap checking (CVE-2026-27144) * istio-pilot-rhel9: no-op interface conversion bypasses overlap checking (CVE-2026-27144) * istio-cni-rhel9: no-op interface conversion bypasses overlap checking (CVE-2026-27144) * istio-rhel9-operator: Go: Denial of Service vulnerability in certificate chain building (CVE-2026-32280) * istio-pilot-rhel9: Go: Denial of Service vulnerability in certificate chain building (CVE-2026-32280) * istio-cni-rhel9: Go: Denial of Service vulnerability in certificate chain building (CVE-2026-32280)
AI Analysis
Technical Summary
Red Hat OpenShift Service Mesh 3.1.8, based on the Istio project, fixes several security vulnerabilities: CVE-2026-27143 involves possible memory corruption after bound check elimination; CVE-2026-27144 involves no-op interface conversion bypassing overlap checking; and CVE-2026-32280 is a denial of service vulnerability in Go's certificate chain building. These vulnerabilities affect multiple components including istio-rhel9-operator, istio-proxyv2-rhel9, istio-pilot-rhel9, and istio-cni-rhel9. The advisory references Red Hat OpenShift Service Mesh 3.1.8 as the fixed version.
Potential Impact
The vulnerabilities could lead to memory corruption and denial of service conditions in affected components of Red Hat OpenShift Service Mesh, potentially impacting the stability and security of microservice architectures managed by this service mesh. The denial of service vulnerability in certificate chain building could disrupt secure communications. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
A fixed version, Red Hat OpenShift Service Mesh 3.1.8, is available and addresses these vulnerabilities. Users should upgrade to this version following Red Hat's official guidance. No additional mitigation actions are specified by the vendor advisory.
Red Hat Security Advisory: Red Hat OpenShift Service Mesh 3.1.8
Description
Red Hat OpenShift Service Mesh 3.1.8, which is based on the open source Istio project, addresses a variety of problems in a microservice architecture by creating a centralized point of control in an application. Fixes/Improvements: * OSSM 3 Operator icon missing from OperatorHub catalog in OCP console (OSSM-13028) Security Fix(es): * istio-rhel9-operator: possible memory corruption after bound check elimination (CVE-2026-27143) * istio-proxyv2-rhel9: possible memory corruption after bound check elimination (CVE-2026-27143) * istio-pilot-rhel9: possible memory corruption after bound check elimination (CVE-2026-27143) * istio-cni-rhel9: possible memory corruption after bound check elimination (CVE-2026-27143) * istio-rhel9-operator: no-op interface conversion bypasses overlap checking (CVE-2026-27144) * istio-proxyv2-rhel9: no-op interface conversion bypasses overlap checking (CVE-2026-27144) * istio-pilot-rhel9: no-op interface conversion bypasses overlap checking (CVE-2026-27144) * istio-cni-rhel9: no-op interface conversion bypasses overlap checking (CVE-2026-27144) * istio-rhel9-operator: Go: Denial of Service vulnerability in certificate chain building (CVE-2026-32280) * istio-pilot-rhel9: Go: Denial of Service vulnerability in certificate chain building (CVE-2026-32280) * istio-cni-rhel9: Go: Denial of Service vulnerability in certificate chain building (CVE-2026-32280)
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Red Hat OpenShift Service Mesh 3.1.8, based on the Istio project, fixes several security vulnerabilities: CVE-2026-27143 involves possible memory corruption after bound check elimination; CVE-2026-27144 involves no-op interface conversion bypassing overlap checking; and CVE-2026-32280 is a denial of service vulnerability in Go's certificate chain building. These vulnerabilities affect multiple components including istio-rhel9-operator, istio-proxyv2-rhel9, istio-pilot-rhel9, and istio-cni-rhel9. The advisory references Red Hat OpenShift Service Mesh 3.1.8 as the fixed version.
Potential Impact
The vulnerabilities could lead to memory corruption and denial of service conditions in affected components of Red Hat OpenShift Service Mesh, potentially impacting the stability and security of microservice architectures managed by this service mesh. The denial of service vulnerability in certificate chain building could disrupt secure communications. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
A fixed version, Red Hat OpenShift Service Mesh 3.1.8, is available and addresses these vulnerabilities. Users should upgrade to this version following Red Hat's official guidance. No additional mitigation actions are specified by 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-2026:16505
- Cve Count
- 3
- Additional Cves
- ["CVE-2026-27144","CVE-2026-32280"]
- Cvss Version
- null
Threat ID: 6a16097be29bf47b50647bae
Added to database: 05/26/2026, 20:58:35 UTC
Last enriched: 07/30/2026, 11:08:49 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 63
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