ESP-in-TCP

Linux XFRM ESP-in-TCP Local Privilege Escalation (Fragnesia)

CVE-2026-46300 ("Fragnesia") is a universal Linux local privilege escalation vulnerability in the XFRM ESP-in-TCP subsystem. It is a member of the Dirty Frag vulnerability class — a separate bug from the original dirtyfrag — that abuses a logic flaw where the…