Date: Mon, 25 Feb 2013 14:21:46 -0500 From: Dan Rosenberg <dan.j.rosenberg@...il.com> To: oss-security@...ts.openwall.com Subject: Re: CVE Request: kernel - sock_diag: Fix out-of-bounds access to sock_diag_handlers On 02/25/2013 02:18 PM, Mathias Krause wrote: > 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 > Relax, no need to get so worked up. ;-) Of course you're right, my head wasn't working. Sorry for the noise. Regards, Dan
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