Fragnesia Linux Flaw Allows Root Privilege Escalation, PoC Released
ID: 985ddedb-86c8-5ceb-b7bf-4c59633ea0b2
STIX ID: report--985ddedb-86c8-5ceb-b7bf-4c59633ea0b2
Feed Name: Cyber Press
Threat Score
A newly disclosed Linux local privilege escalation vulnerability called "Fragnesia" abuses a logic bug in the XFRM ESP-in-TCP subsystem to flip bytes in the kernel page cache and inject an ELF stub that grants a root shell; a public proof-of-concept exploit is available, it affects kernels prior to May 13, 2026 (confirmed on Ubuntu 6.8.0-111-generic), and administrators are advised to apply the official patch, unload ESP modules, and drop caches immediately.
Your team is not currently subscribed to this feed. You must subscribe to it in order to see this post.