Re: CVE Request: kernel - sock_diag: Fix out-of-bounds access to sock_diag_handlers[]

[Dan Rosenberg <dan.j.rosenberg () gmail com>]

On 02/25/2013 01:59 PM, Mathias Krause wrote:
> On Mon, Feb 25, 2013 at 7:53 PM, Dan Rosenberg
> <dan.j.rosenberg () gmail 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.

-Dan