Re: [PATCH 0/2] videobuf2: Fix kernel memory overwriting

Sakari Ailus
2016-04-06T11:50:06Z

Fixing Mauro's e-mail address...

On Wed, Apr 06, 2016 at 02:46:06PM +0300, Sakari Ailus wrote:
> Hi all,
>
> In multi-planar API, the buffer length and m.planes fields are checked
> against the vb2 buffer before passing the buffer on to the core, but
> commit b0e0e1f83de31aa0428c38b692c590cc0ecd3f03 removed this check from
> VIDIOC_DQBUF path. This leads to kernel memory overwriting in certain
> cases.
>
> This affects only v4.4 and newer and a very few drivers which use the
> multi-planar API. Due to the very limited scope of the issue this is not
> seen to require special handling.
>
> The patches should be applied to the stable series, I'll add cc stable
> in the pull request.
>
> --
> Kind regards,
> Sakari
>
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--
Sakari Ailus
e-mail: sakari.ailus@iki.fi XMPP: sailus@retiisi.org.uk