Hi Jiri, On Thu, Feb 11, 2016 at 02:59:08PM +0100, Jiri Slaby wrote: > From: willy tarreau <w...@1wt.eu> > > 3.12-stable review patch. If anyone has any objections, please let me know. > > =============== > > [ Upstream commit 712f4aad406bb1ed67f3f98d04c044191f0ff593 ] > > 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: socketp...@gmail.com > Reported-by: Tetsuo Handa <penguin-ker...@i-love.sakura.ne.jp> > Mitigates: CVE-2013-4312 (Linux 2.0+) > Suggested-by: Linus Torvalds <torva...@linux-foundation.org> > Acked-by: Hannes Frederic Sowa <han...@stressinduktion.org> > Signed-off-by: Willy Tarreau <w...@1wt.eu> > Signed-off-by: David S. Miller <da...@davemloft.net> > Signed-off-by: Jiri Slaby <jsl...@suse.cz>
A possible issue was reported regarding this patch, and Hannes implemented a fix that's not yet in mainline. I guess it's preferable to postpone this patch for now. Thanks, Willy
