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Date: Mon, 17 Oct 2011 15:14:30 +0200
From: Petr Matousek <>
Subject: Re: CVE request: kernel/AppArmor local denial of

On Mon, Oct 17, 2011 at 02:32:43PM +0200, Marcus Meissner wrote:
> Hi,
> A process can cause itself to Ooops by doing an invalid formatted
> write to the process attr/current when the Apparmor security framework
> is enabled (even without a apparmor profile).
> e.g. by doing "echo 'AAA AAA' > /proc/$$/attr/current"
> This will cause a NULL ptr dereference, which oopses the current process and
> in connection with kdump or panic on oops will halt the machine.
> References:
> Fix is in:
> This only affected Linux kernel mainline since the introduction of
> AppArmor up to and including 3.0-rc2
> The SUSE patchset used in our older distribution had a additional NULL
> check avoiding the issue.
> Ciao, Marcus

Please use CVE-2011-3619.

Petr Matousek / Red Hat Security Response Team

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