Date: Mon, 25 Feb 2013 20:18:42 +0100 From: Mathias Krause <minipli@...glemail.com> To: oss-security@...ts.openwall.com Subject: Re: CVE Request: kernel - sock_diag: Fix out-of-bounds access to sock_diag_handlers On Mon, Feb 25, 2013 at 8:07 PM, Dan Rosenberg <dan.j.rosenberg@...il.com> wrote: > On 02/25/2013 01:59 PM, Mathias Krause wrote: >> On Mon, Feb 25, 2013 at 7:53 PM, Dan Rosenberg >> <dan.j.rosenberg@...il.com> wrote: >>> On 02/25/2013 01:45 PM, Mathias Krause wrote: >>>> Did you even try to run the exploit on a v3.2 kernel? Or even more >>>> simple, looked at the code of a v3.2 kernel? There is no sock_diag >>>> anywhere in the kernel; there is only inet_diag. And inet_diag hadn't >>>> and still does not have the out-of-bounds access issue. So no, this >>>> bug is non-existent on a v3.2 kernel. >>>> >>>> Thanks, >>>> Mathias >>>> >>> The bug was introduced with this commit: >>> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commit;h=d366477a52f1df29fa066ffb18e4e6101ee2ad04 >>> >>> This commit took place during kernel version 3.2.0-rc4, so yes, it does >>> seem to affect 3.2 kernels. >> >> $ git describe --contains d366477a52f1df29fa066ffb18e4e6101ee2ad04 >> v3.3-rc1~182^2~326 >> >> Is git lying to me or what? >> >> >> Cheers, >> Mathias >> > > Apparently so. Linux 3.3-rc1 was released on January 19, 2012, while the > patch to introduce sock_diag was applied December 6, 2011. Dude, have you even *tried* to confirm what you're claiming? $ git grep sock_diag_handler v3.2 | wc -l 0 $ git checkout v3.2; grep -rw sock_diag_handler . | wc -l 0 So either my git tree is horribly broken or your arguments are. Ever heard of net-next.git -- containing commits that should end up in the *next* version of Linux? Cheers, Mathias
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