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

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Date:	Mon, 25 Jan 2016 09:18:44 -0800
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Yuki Machida <machida.yuki@...fujitsu.com>
Cc:	netdev@...r.kernel.org,
	Salva Peiró <speirofr@...il.com>,
	Hans Verkuil <hans.verkuil@...co.com>,
	Mauro Carvalho Chehab <mchehab@....samsung.com>
Subject: Re: [PATCH 4.1] [media] media/vivid-osd: fix info leak in ioctl

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 <speirofr@...il.com>
> Signed-off-by: Hans Verkuil <hans.verkuil@...co.com>
> Signed-off-by: Mauro Carvalho Chehab <mchehab@....samsung.com>
> Signed-off-by: Yuki Machida <machida.yuki@...fujitsu.com>
> ---
>  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>