Linux Kernel Dirty Frag LPE Exploit Enables Root Access Across Major Distributions

**Dirty Frag** is a newly reported, unpatched Linux kernel local privilege escalation that chains xfrm-ESP and RxRPC page-cache write flaws to obtain root on most distributions (Ubuntu, RHEL, Fedora, AlmaLinux, CentOS Stream, openSUSE, etc.). The researcher reports the bug is deterministic with a high success rate, a working proof-of-concept has been published after an embargo was broken, and interim mitigation is to blacklist and unload esp4, esp6, and rxrpc kernel modules until patches are available.