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

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Message-ID: <56A878FD.7070905@jp.fujitsu.com>
Date:	Wed, 27 Jan 2016 16:59:57 +0900
From:	Yuki Machida <machida.yuki@...fujitsu.com>
To:	Greg KH <gregkh@...uxfoundation.org>
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

Hi Greg,

On 2016年01月26日 02:18, Greg KH wrote:
> 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.

Thank you for your advice.
I will check stable_kernel_rules.txt again.

> </formletter>
>