The epoll UAF: A Same-CPU Preemption Race in fs/eventpoll.c on Linux 6.6+

Original: This article is an independent of “The epoll uaf”, published on the personal blog at guysrd.github.io. Author not clearly listed on the source page — the site handle is guysrd, with no byline.

All vulnerability research, reverse engineering, the struct-offset table, the C excerpts from fs/eventpoll.c and the exploit-feasibility analysis are the work of…

https://core-jmp.org/2026/05/epoll-uaf-eventpoll-rcu-race-rewrite/