// #nftables

2 articles

CVE-2026-23111 Detection and Hardening Guide: Protecting Linux Environments from the nf_tables Exploit

With public proof-of-concept code available for CVE-2026-23111, security teams running Linux across production, containerised, and cloud environments need specific detection and hardening guidance. This guide covers kernel patch availability by distribution, interim mitigations, eBPF-based detection, and Kubernetes-specific containment measures.

Jun 11, 2026 #linux-kernel +9

🌐 Network

Linux Kernel CVE-2026-23111: nf_tables Use-After-Free Enables Container Escape and Root Privilege Escalation

A use-after-free vulnerability in the Linux kernel's nf_tables netfilter subsystem allows unprivileged users to escalate to root and break container isolation. Public proof-of-concept code published 9 June makes this an immediate remediation priority across all major Linux distributions running kernel versions 5.15 through 6.10.

Jun 9, 2026 #linux-kernel +7