Google Cloud Update Version cos-beta-129-19506-120-44; cos-125-19216-220-180; cos-121-18867-

Include Cloud Trace bucket location expansion, multiple Container Optimized OS releases with kernel and security fixes, GKE Kubernetes 1.36 Rapid channel availability, and reCAPTCHA Mobile SDK v18.9.0 for iOS.

• Container Optimized OS fixed many Linux kernel CVEs, including CVE-2026-23276, CVE-2026-23375, CVE-2026-23391, CVE-2026-23397, CVE-2026-23398, CVE-2026-23399, CVE-2026-23401, CVE-2026-23412, CVE-2026-23413, CVE-2026-23414, CVE-2026-23417, CVE-2026-23439, CVE-2026-23449, CVE-2026-23452, CVE-2026-23455, CVE-2026-23456, CVE-2026-23457, CVE-2026-23465, CVE-2026-23471, CVE-2026-31392, CVE-2026-31400, CVE-2026-31402, CVE-2026-31403, CVE-2026-31406, CVE-2026-31407, CVE-2026-31413, CVE-2026-31414, CVE-2026-31415, CVE-2026-31416, CVE-2026-31418, CVE-2026-31421, CVE-2026-31423, CVE-2026-31424, CVE-2026-31426, CVE-2026-31427, CVE-2026-31428, CVE-2026-31431, CVE-2026-31434, CVE-2026-31438, CVE-2026-31446, CVE-2026-31447, CVE-2026-31448, CVE-2026-31449, CVE-2026-31450, CVE-2026-31451, CVE-2026-31452, CVE-2026-31453, CVE-2026-31454, CVE-2026-31455, CVE-2026-31466, CVE-2026-31469, CVE-2026-31495, CVE-2026-31496, CVE-2026-31515, CVE-2026-31516, CVE-2026-31519, CVE-2026-31521, CVE-2026-31523, CVE-2026-31525, CVE-2026-31528, CVE-2026-31531, CVE-2026-31546, CVE-2026-31664, CVE-2026-31667, CVE-2026-32280, CVE-2026-32281, CVE-2026-32283, CVE-2026-27140, CVE-2026-27144, CVE-2026-34743, and CVE-2026-4046.
• Container Optimized OS hardened /etc/machine-id by mounting it with noexec, nosuid, and nodev.
• Container Optimized OS fixed KCTF-42156f9 in the Linux kernel.

• Container Optimized OS fixed an ext4/jbd2 performance regression on CPU Node.
• Container Optimized OS optimized IOMMU reference counting using atomic64_inc_return().
• Container Optimized OS serialized sequence allocation to prevent timeouts during concurrent TLB invalidations.
• Container Optimized OS upgraded sys-apps/makedumpfile to v1.7.9.
• Container Optimized OS added support for NVIDIA drivers v580.126.16 and v580.126.20.

• Cloud Trace observability buckets now support additional locations, including australia-southeast1, europe-central2, europe-north1, europe-southwest1, europe-west2, europe-west10, europe-west12, me-central2, northamerica-northeast1, and us-east4.
• Container Optimized OS added support for the R595 Nvidia driver production branch.
• Container Optimized OS enabled CONFIG_SCHED_CLASS_EXT and CONFIG_EXT_GROUP_SCHED.
• GKE Kubernetes 1.36 is now available in the Rapid channel.
• Kubernetes 1.36 introduces default GKE subsetting for new L4 Internal Load Balancer services, GA Mutating Admission Policies, and a kube-dns switch to CoreDNS.
• reCAPTCHA Mobile SDK v18.9.0 for iOS adds reliability improvements, score calibration changes, and beta support for visionOS, arm64e, and Enhanced Security Features.

• The /etc/machine-id mount hardening may affect workflows that expect it to be executable or writable.
• The reCAPTCHA score distribution changes may require threshold review to reduce false positives.
• The GKE L4 Internal Load Balancer subsetting change applies only to newly created services; existing services remain on Instance Groups.
• Kubernetes 1.36 Rapid channel availability is announced separately from the detailed Kubernetes 1.36 release notes.

Product Information

Vendor: Google

Product: Cloud

Product type: Other

Platform: Web

Version: cos-beta-129-19506-120-44; cos-125-19216-220-180; cos-121-18867-

Vendor release date: May 1, 2026

Published on updatealert.io: Jun 4, 2026

Description: Cloud platform for compute, data, networking, and developer services.