Re: [ 130/184] CVE-2012-4508 kernel: ext4: AIO vs fallocate stale

From: Jamie Iles
Date: Fri Jun 07 2013 - 04:04:40 EST

Hi Ben, Willy,

On Fri, Jun 07, 2013 at 06:42:05AM +0100, Ben Hutchings wrote:
> On Tue, 2013-06-04 at 19:23 +0200, Willy Tarreau wrote:
> > 2.6.32-longterm review patch. If anyone has any objections, please let me know.
> >
> > ------------------
> > data exposure
> >
> > From: Jamie Iles <jamie.iles@xxxxxxxxxx>
> >
> > CVE-2012-4508 kernel: ext4: AIO vs fallocate stale data exposure
> > [dannf: backported to Debian's 2.6.32]
> Well, this has an interesting ancestry. The original upstream commits
> were c278531d39f3158bfee93dc67da0b77e09776de2,
> 60d4616f3dc63371b3dc367e5e88fd4b4f037f65 and (most importantly)
> dee1f973ca341c266229faa5a1a5bb268bed3531 by Dmitry Monakhov
> <dmonakhov@xxxxxxxxxx>. They were backported into the RHEL 6 kernel by
> Lukas Czerner, according to its changelog. Dann got this version from
> Oracle's redpatch repository, where, if I understand rightly, Jamie Iles
> attempted to regenerate Lukas's patch(es).

That sounds correct to me - the patch is the result of splitting the
large ext4 patch that RHEL did from 6.3 -> 6.4. The Virtuozzo/OpenVZ
folks came up with the same patch (independently I think) too.

> Would any of the above named be prepared to put their Signed-off-by to
> this?

Sure, I'd be happy to add my s-o-b.

Signed-off-by: Jamie Iles <jamie@xxxxxxxxxxxxx>


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