Hi Jiri, On Thu, Feb 11, 2016 at 02:59:08PM +0100, Jiri Slaby wrote: > From: willy tarreau <w@xxxxxx> > > 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: socketpair@xxxxxxxxx > Reported-by: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx> > Mitigates: CVE-2013-4312 (Linux 2.0+) > Suggested-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> > Acked-by: Hannes Frederic Sowa <hannes@xxxxxxxxxxxxxxxxxxx> > Signed-off-by: Willy Tarreau <w@xxxxxx> > Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> > Signed-off-by: Jiri Slaby <jslaby@xxxxxxx> 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 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html