Messages in this thread | | | Date | Mon, 11 Jan 2016 00:05:55 -0500 (EST) | Subject | Re: [PATCH v2] unix: properly account for FDs passed over unix sockets | From | David Miller <> |
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From: Willy Tarreau <w@1wt.eu> Date: Sun, Jan 10 07:54:56 CET 2016
> It is possible for a process to allocate and accumulate far more FDs than > the process' limit by sending them over a unix socket then closing them > to keep the process' fd count low. > > This change addresses this problem by keeping track of the number of FDs > in flight per user and preventing non-privileged processes from having > more FDs in flight than their configured FD limit. > > Reported-by: socketpair@gmail.com > Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> > Mitigates: CVE-2013-4312 (Linux 2.0+) > Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> > Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> > Signed-off-by: Willy Tarreau <w@1wt.eu>
Applied and queued up for -stable, thanks!
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