Kubernetes v1.33.9-0 Release Notes

Overview

Thalassa Cloud Kubernetes v1.33.9-0 ships Kubernetes v1.33.9 with containerd 2.1.4 and Cilium v1.19.1.

Security Fixes

This release includes important security fixes:

• runc 1.3.3: Fixes for three high-severity vulnerabilities (CVE-2025-31133, CVE-2025-52565, and CVE-2025-52881) that could allow container breakouts via bypass of runc restrictions on writing to certain /proc paths.

Read more in the runc v1.3.3 release notes.

What’s New

Component updates

• Kubernetes 1.33.9
• containerd 2.1.4
• CNI Plugins 1.7.1
• crictl 1.33.0
• runc 1.3.3
• Cilium 1.19.1
• Thalassa Cloud Controller Manager 0.9.0
• Thalassa CSI Plugin 0.5.3
• Base OS Ubuntu 24.04

Component Versions