Red Hat Security Advisory: Red Hat OpenShift Service Mesh 3.1.6
Red Hat OpenShift Service Mesh 3.1.6, 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: * Multiple InferencePools on same Gateway - ext_proc lost for all but first (OSSM-12585) Security Fix(es): * istio-rhel9-operator: Unexpected session resumption in crypto/tls (CVE-2025-68121) * istio-cni-rhel9: Unexpected session resumption in crypto/tls (CVE-2025-68121) * istio-pilot-rhel9: Unexpected session resumption in crypto/tls (CVE-2025-68121) * istio-proxyv2-rhel9: Unexpected session resumption in crypto/tls (CVE-2025-68121) * istio-rhel9-operator: Potential code smuggling via doc comments in cmd/cgo (CVE-2025-61732) * istio-cni-rhel9: Potential code smuggling via doc comments in cmd/cgo (CVE-2025-61732) * istio-pilot-rhel9: Potential code smuggling via doc comments in cmd/cgo (CVE-2025-61732) * istio-proxyv2-rhel9: Potential code smuggling via doc comments in cmd/cgo (CVE-2025-61732) * istio-rhel9-operator: cmd/go: Arbitrary file write via malicious pkg-config directive (CVE-2025-61731) * istio-cni-rhel9: cmd/go: Arbitrary file write via malicious pkg-config directive (CVE-2025-61731) * istio-pilot-rhel9: cmd/go: Arbitrary file write via malicious pkg-config directive (CVE-2025-61731) * istio-proxyv2-rhel9: cmd/go: Arbitrary file write via malicious pkg-config directive (CVE-2025-61731) * istio-rhel9-operator: Excessive CPU consumption when building archive index in archive/zip (CVE-2025-61728) * istio-cni-rhel9: Excessive CPU consumption when building archive index in archive/zip (CVE-2025-61728) * istio-pilot-rhel9: Excessive CPU consumption when building archive index in archive/zip (CVE-2025-61728) * istio-proxyv2-rhel9: Excessive CPU consumption when building archive index in archive/zip (CVE-2025-61728) * istio-rhel9-operator: Memory exhaustion in query parameter parsing in net/url (CVE-2025-61726) * istio-cni-rhel9: Memory exhaustion in query parameter parsing in net/url (CVE-2025-61726) * istio-pilot-rhel9: Memory exhaustion in query parameter parsing in net/url (CVE-2025-61726) * istio-proxyv2-rhel9: Memory exhaustion in query parameter parsing in net/url (CVE-2025-61726) * istio-pilot-rhel9: JWKS Resolver Failure May Expose Hardcoded Default Keys (CVE-2026-31837) * istio-proxyv2-rhel9: JWKS Resolver Failure May Expose Hardcoded Default Keys (CVE-2026-31837)
AI Analysis
Technical Summary
Red Hat OpenShift Service Mesh 3.1.6 includes multiple security fixes for vulnerabilities identified in its Istio-based components. The addressed CVEs include CVE-2025-68121 (unexpected TLS session resumption), CVE-2025-61732 (potential code smuggling via doc comments in cmd/cgo), CVE-2025-61731 (arbitrary file write via malicious pkg-config directive), CVE-2025-61728 (excessive CPU consumption when building archive index in archive/zip), CVE-2025-61726 (memory exhaustion in query parameter parsing in net/url), and CVE-2026-31837 (JWKS resolver failure exposing hardcoded default keys). These vulnerabilities affect multiple components of the service mesh operator and runtime, potentially leading to resource exhaustion, unauthorized file writes, and exposure of cryptographic keys. The Red Hat advisory RHSA-2026:5950 confirms these fixes are included in version 3.1.6.
Potential Impact
The vulnerabilities collectively could allow attackers to cause denial of service through excessive CPU or memory consumption, perform arbitrary file writes potentially leading to code execution or system compromise, bypass expected TLS session security, and expose hardcoded cryptographic keys which could undermine authentication and authorization mechanisms within the service mesh. These impacts affect the confidentiality, integrity, and availability of services managed by Red Hat OpenShift Service Mesh.
Mitigation Recommendations
Red Hat has released OpenShift Service Mesh version 3.1.6 which includes fixes for all identified vulnerabilities. Users should upgrade to this version to remediate the security issues. No additional vendor-recommended mitigations or temporary workarounds are indicated in the advisory. Patch status is confirmed by the vendor advisory RHSA-2026:5950.
Red Hat Security Advisory: Red Hat OpenShift Service Mesh 3.1.6
Description
Red Hat OpenShift Service Mesh 3.1.6, 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: * Multiple InferencePools on same Gateway - ext_proc lost for all but first (OSSM-12585) Security Fix(es): * istio-rhel9-operator: Unexpected session resumption in crypto/tls (CVE-2025-68121) * istio-cni-rhel9: Unexpected session resumption in crypto/tls (CVE-2025-68121) * istio-pilot-rhel9: Unexpected session resumption in crypto/tls (CVE-2025-68121) * istio-proxyv2-rhel9: Unexpected session resumption in crypto/tls (CVE-2025-68121) * istio-rhel9-operator: Potential code smuggling via doc comments in cmd/cgo (CVE-2025-61732) * istio-cni-rhel9: Potential code smuggling via doc comments in cmd/cgo (CVE-2025-61732) * istio-pilot-rhel9: Potential code smuggling via doc comments in cmd/cgo (CVE-2025-61732) * istio-proxyv2-rhel9: Potential code smuggling via doc comments in cmd/cgo (CVE-2025-61732) * istio-rhel9-operator: cmd/go: Arbitrary file write via malicious pkg-config directive (CVE-2025-61731) * istio-cni-rhel9: cmd/go: Arbitrary file write via malicious pkg-config directive (CVE-2025-61731) * istio-pilot-rhel9: cmd/go: Arbitrary file write via malicious pkg-config directive (CVE-2025-61731) * istio-proxyv2-rhel9: cmd/go: Arbitrary file write via malicious pkg-config directive (CVE-2025-61731) * istio-rhel9-operator: Excessive CPU consumption when building archive index in archive/zip (CVE-2025-61728) * istio-cni-rhel9: Excessive CPU consumption when building archive index in archive/zip (CVE-2025-61728) * istio-pilot-rhel9: Excessive CPU consumption when building archive index in archive/zip (CVE-2025-61728) * istio-proxyv2-rhel9: Excessive CPU consumption when building archive index in archive/zip (CVE-2025-61728) * istio-rhel9-operator: Memory exhaustion in query parameter parsing in net/url (CVE-2025-61726) * istio-cni-rhel9: Memory exhaustion in query parameter parsing in net/url (CVE-2025-61726) * istio-pilot-rhel9: Memory exhaustion in query parameter parsing in net/url (CVE-2025-61726) * istio-proxyv2-rhel9: Memory exhaustion in query parameter parsing in net/url (CVE-2025-61726) * istio-pilot-rhel9: JWKS Resolver Failure May Expose Hardcoded Default Keys (CVE-2026-31837) * istio-proxyv2-rhel9: JWKS Resolver Failure May Expose Hardcoded Default Keys (CVE-2026-31837)
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Red Hat OpenShift Service Mesh 3.1.6 includes multiple security fixes for vulnerabilities identified in its Istio-based components. The addressed CVEs include CVE-2025-68121 (unexpected TLS session resumption), CVE-2025-61732 (potential code smuggling via doc comments in cmd/cgo), CVE-2025-61731 (arbitrary file write via malicious pkg-config directive), CVE-2025-61728 (excessive CPU consumption when building archive index in archive/zip), CVE-2025-61726 (memory exhaustion in query parameter parsing in net/url), and CVE-2026-31837 (JWKS resolver failure exposing hardcoded default keys). These vulnerabilities affect multiple components of the service mesh operator and runtime, potentially leading to resource exhaustion, unauthorized file writes, and exposure of cryptographic keys. The Red Hat advisory RHSA-2026:5950 confirms these fixes are included in version 3.1.6.
Potential Impact
The vulnerabilities collectively could allow attackers to cause denial of service through excessive CPU or memory consumption, perform arbitrary file writes potentially leading to code execution or system compromise, bypass expected TLS session security, and expose hardcoded cryptographic keys which could undermine authentication and authorization mechanisms within the service mesh. These impacts affect the confidentiality, integrity, and availability of services managed by Red Hat OpenShift Service Mesh.
Mitigation Recommendations
Red Hat has released OpenShift Service Mesh version 3.1.6 which includes fixes for all identified vulnerabilities. Users should upgrade to this version to remediate the security issues. No additional vendor-recommended mitigations or temporary workarounds are indicated in the advisory. Patch status is confirmed by the vendor advisory RHSA-2026:5950.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:5950
- Cve Count
- 6
- Additional Cves
- ["CVE-2025-61728","CVE-2025-61731","CVE-2025-61732","CVE-2025-68121","CVE-2026-31837"]
- Cvss Version
- null
Threat ID: 6a160964e29bf47b50629c33
Added to database: 05/26/2026, 20:58:12 UTC
Last enriched: 07/30/2026, 10:13:56 UTC
Last updated: 07/31/2026, 19:30:09 UTC
Views: 79
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