ACK: [Lucid CVE-2013-0871] race conditon in ptrace

[Colin Ian King]

On 19/02/13 17:31, Luis Henriques wrote:
>  From the description:
>
>   "A race conditon in ptrace can lead to kernel stack corruption and
>    arbitrary kernel-mode code execution."
>
> Following this email, there are 4 patches that fix this issue for Lucid.
> It contains a extra patch (the other series had only 3) as I was
> triggering a different issue:
>
> I was hitting the WARN_ON() in the wake_up_process(), that is added by
> patch 4 in this serie ("wake_up_process() should be never used to wakeup a
> TASK_STOPPED/TRACED task").
>
> Again, I did a lot of testing with this backport and although I'm pretty
> confident that I'm not introducing any regressions, a good review would be
> great!
>

I reviewed this off-list earlier today. All looked sane to me.

Acked-by: Colin Ian King <colin.king at canonical.com>