Subject: Re: [PATCH 4.1] [media] media/vivid-osd: fix info leak in ioctl

From: Greg KH <[email-masked]>
Date: Mon, 25 Jan 2016 09:18:44 -0800

On Mon, Jan 25, 2016 at 07:42:18PM +0900, Yuki Machida wrote:
> commit eda98796aff0d9bf41094b06811f5def3b4c333c upstream.
> 
> The vivid_fb_ioctl() code fails to initialize the 16 _reserved bytes of
> struct fb_vblank after the ->hcount member. Add an explicit
> memset(0) before filling the structure to avoid the info leak.
> 
> This fixes CVE-2015-7884.
> 
> Signed-off-by: Salva Peiró <[email-masked]>
> Signed-off-by: Hans Verkuil <[email-masked]>
> Signed-off-by: Mauro Carvalho Chehab <[email-masked]>
> Signed-off-by: Yuki Machida <[email-masked]>
> ---
>  drivers/media/platform/vivid/vivid-osd.c | 1 +
>  1 file changed, 1 insertion(+)

<formletter>

This is not the correct way to submit patches for inclusion in the
stable kernel tree.  Please read Documentation/stable_kernel_rules.txt
for how to do this properly.

</formletter>