From: David Miller <davem@davemloft.net>
To: w@1wt.eu
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
torvalds@linux-foundation.org, edumazet@google.com,
hannes@stressinduktion.org, socketpair@gmail.com,
penguin-kernel@I-love.SAKURA.ne.jp
Subject: Re: [PATCH v2] unix: properly account for FDs passed over unix sockets
Date: Mon, 11 Jan 2016 00:05:55 -0500 (EST) [thread overview]
Message-ID: <20160111.000555.957168926959879139.davem@davemloft.net> (raw)
In-Reply-To: <201601100657.u0A6vk1B025554@mail.home.local>
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!
next prev parent reply other threads:[~2016-01-11 5:05 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-10 6:58 [PATCH v2] unix: properly account for FDs passed over unix sockets Willy Tarreau
2016-01-11 5:05 ` David Miller [this message]
2016-02-02 17:34 ` David Herrmann
2016-02-02 18:29 ` Hannes Frederic Sowa
2016-02-02 19:29 ` Linus Torvalds
2016-02-02 20:32 ` Hannes Frederic Sowa
2016-02-02 20:39 ` Willy Tarreau
2016-02-02 21:55 ` Hannes Frederic Sowa
[not found] ` <CA+55aFzqdR80MKupCs+va8vtbTU67Jobax1QAbfWNktQCXFxpA@mail.gmail.com>
2016-02-03 0:57 ` Hannes Frederic Sowa
2016-02-03 1:12 ` Hannes Frederic Sowa
2016-02-02 20:44 ` Linus Torvalds
2016-02-02 20:49 ` Willy Tarreau
2016-02-02 20:53 ` Linus Torvalds
2016-02-02 20:58 ` Willy Tarreau
2016-02-02 20:56 ` Hannes Frederic Sowa
2016-02-03 12:19 ` David Laight
2016-02-03 11:36 ` Simon McVittie
2016-02-03 11:56 ` Hannes Frederic Sowa
2016-02-03 11:56 ` David Herrmann
2016-02-03 12:49 ` Simon McVittie
2016-02-03 14:07 ` Hannes Frederic Sowa
-- strict thread matches above, loose matches on Subject: below --
2016-01-10 6:58 Willy Tarreau
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