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Message-ID: <503384E3.8010903@mvista.com>
Date: Tue, 21 Aug 2012 05:53:55 -0700
From: akuster <akuster@...sta.com>
To: Petr Matousek <pmatouse@...hat.com>
CC: oss-security@...ts.openwall.com
Subject: Re: CVE Request -- kernel: taskstats: use-after-free
in xacct_add_tsk()
Petr,
If I am not mistaken, this was introduced via
9acc1853519a0473620d424105f9d49ea5b4e62e and only if TASK_XACCT is enabled.
is that correct?
regards,
Armin
On 08/20/2012 10:25 AM, Petr Matousek wrote:
> An use-after-free flaw has been found in the way taskstat's
> TASKSTATS_CMD_ATTR_PID command and exiting tasks with already freed mm
> interacted. An unprivileged local user could use this flaw to crash the
> system or leak kernel memory.
>
> Please note that the fix below is from year 2006.
>
> Upstream fix:
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=f0ec1aaf54caddd21c259aea8b2ecfbde4ee4fb9
>
> References:
> http://bugzilla.openvz.org/show_bug.cgi?id=2294
> https://bugzilla.redhat.com/show_bug.cgi?id=849722
>
> Thanks,
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