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Message-ID: <CA+rthh8WNMCU21QxA9CXJcGepnaWQLn2+BOPkPaABzz05jQpYg@mail.gmail.com>
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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