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Articole: 4

  1. I handed the epoll UAF to an agent

    (https://guysrd.github.io/feed.xml)

    In the last post I burned a few weeks on Nicholas’s epoll graph-walker UAF, got a constrained write but I never turned it into anything.

  2. futex: remove_waiter stack uaf

    (https://guysrd.github.io/feed.xml)

    This post describes a stack uaf in the Linux futex subsystem, sitting in the code since 2011 and patched in April 2026.

  3. The futex READ_ONCE

    (https://guysrd.github.io/feed.xml)

    A futex is a 32b integer in userspace memory.

  4. The epoll uaf

    (https://guysrd.github.io/feed.xml)

    A couple of weeks ago Nicholas Carlini burned an epoll uaf race in fs/eventpoll.c.