Linux TC Privilege Escalation CVE-2026-53264 Disclosed

A critical security vulnerability, CVE-2026-53264, has been disclosed in the Linux kernel's network traffic-control (TC) subsystem. The bug allows a local user to trigger memory corruption and escalate their privileges to root.

Security researchers noted that AI-powered analysis tools were used to discover and write working exploits for this vulnerability. Security teams patching servers can format their scripts using [Code Formatter](/tools/code-formatter/).

The Flaw in Kernel Traffic Control Queueing

The flaw lies in how the kernel handles packet queueing under heavy load, leading to a race condition. A local attacker can exploit this to write arbitrary values to kernel memory.

AI Assisted Exploit Code in Kernel Subsystems

A patch has been backported to all stable kernel branches, and administrators are urged to apply the updates immediately to mitigate root escalation risks.