Search: CVE-2025-39946

Published: 2025-10-16 Updated: 2026-03-24 Reference: CVE-2025-39946 2026-03-24 Update: Added patch versions for Ubuntu nodes with GKE. 2025-11-13 Update: Added patch versions for GDC software for VMware. GKE Updated: 2026-03-24 Description Severity The following vulnerabilities were discovered in the Linux kernel that can lead to a privilege escalation on Container-Optimized OS nodes: CVE-2025-39946 GKE Standard and Autopilot clusters are impacted. Clusters using GKE Sandbox aren't impacted. What should I do? 2026-03-24 Update : The following versions of GKE are updated with code to fix this vulnerability on Ubuntu. Upgrade your Ubuntu node pools to the following versions or later: 1.35.2-gke.1269000 1.34.4-gke.1193000 1.33.8-gke.1169000 1.32.13-gke.1059000 The following minor versions are affected. Upgrade your Container-Optimized OS node pools to one of the following patch versions or later: 1.32.9-gke.1108000 1.29.15-gke.1989000 1.31.13-gke.1023000 1.30.14-gke.1336000 1.28.15-gke.2751000 1.34.1-gke.1279000 1.33.5-gke.1162000 You can apply patch versions from newer release channels if your cluster runs the same minor version in its own release channel. This feature lets you secure your nodes until the patch version becomes the default in your release channel. For details, see Run patch versions from a newer channel . High GDC (VMware) Updated: 2025-11-13 Description Severity The following vulnerabilities were discovered in the Linux kernel that can lead to a privilege escalation on Container-Optimized OS nodes: CVE-2025-39946 What should I do? 2025-11-13 Update: The following versions of GDC software for VMware are updated with code to fix this vulnerability. Upgrade your GDC software for VMware clusters to the following versions or later: 1.31.1100-gke.40 Note: Patch versions and a severity assessment for GDC software for VMware are in progress. We'll update this bulletin with that information when it's available. High GKE on AWS Description Severity The following vulnerabilities were discovered in the Linux kernel that can lead to a privilege escalation on Container-Optimized OS nodes: CVE-2025-39946 What should I do? Note: Patch versions and a severity assessment for GKE on AWS are in progress. We'll update this bulletin with that information when it's available. Pending GKE on Azure Description Severity The following vulnerabilities were discovered in the Linux kernel that can lead to a privilege escalation on Container-Optimized OS nodes: CVE-2025-39946 What should I do? Note: Patch versions and a severity assessment for GKE on Azure are in progress. We'll update this bulletin with that information when it's available. Pending GDC (bare metal) Description Severity The following vulnerabilities were discovered in the Linux kernel that can lead to a privilege escalation on Container-Optimized OS nodes: CVE-2025-39946 What should I do? There is no action required. GDC software for bare metal isn't affected as it does not bundle an operating system in its distribution. None