linux-kernel - Re: [PATCH] uvcvideo: add zero fill for VIDIOC_ENUM

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-Id: <200903271515.28146.laurent.pinchart@skynet.be>
Date:	Fri, 27 Mar 2009 15:15:27 +0100
From:	Laurent Pinchart <laurent.pinchart@...net.be>
To:	Németh Márton <nm127@...email.hu>
Cc:	linux-media@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] uvcvideo: add zero fill for VIDIOC_ENUM_FMT

On Wednesday 25 March 2009 07:59:30 Németh Márton wrote:
> From: Márton Németh <nm127@...email.hu>
>
> When enumerating formats with VIDIOC_ENUM_FMT the uvcvideo driver does not
> fill the reserved fields of the struct v4l2_fmtdesc with zeros as required
> by V4L2 API revision 0.24 [1]. Add the missing initializations.
>
> The patch was tested with v4l-test 0.10 [2] with CNF7129 webcam found on
> EeePC 901.
>
> References:
> [1] V4L2 API specification, revision 0.24
>     http://v4l2spec.bytesex.org/spec/r8367.htm
>
> [2] v4l-test: Test environment for Video For Linux Two API
>     http://v4l-test.sourceforge.net/
>
> Signed-off-by: Márton Németh <nm127@...email.hu>

Applied, thanks.

> ---
> --- linux-2.6.29/drivers/media/video/uvc/uvc_v4l2.c.orig	2009-03-24
> 00:12:14.000000000 +0100 +++
> linux-2.6.29/drivers/media/video/uvc/uvc_v4l2.c	2009-03-25
> 07:24:42.000000000 +0100 @@ -673,11 +673,19 @@ static long
> uvc_v4l2_do_ioctl(struct fil
>  	{
>  		struct v4l2_fmtdesc *fmt = arg;
>  		struct uvc_format *format;
> +		__u32 index;
> +		enum v4l2_buf_type type;
>
>  		if (fmt->type != video->streaming->type ||
>  		    fmt->index >= video->streaming->nformats)
>  			return -EINVAL;
>
> +		index = fmt->index;
> +		type = fmt->type;
> +		memset(fmt, 0, sizeof(*fmt));
> +		fmt->index = index;
> +		fmt->type = type;
> +
>  		format = &video->streaming->format[fmt->index];
>  		fmt->flags = 0;
>  		if (format->flags & UVC_FMT_FLAG_COMPRESSED)

Laurent Pinchart

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/