From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tiffany Lin Subject: [PATCH] media: v4l2-compat-ioctl32: fix missing length copy in put_v4l2_buffer32 Date: Thu, 14 Jan 2016 15:37:25 +0800 Message-ID: <1452757045-34051-1-git-send-email-tiffany.lin@mediatek.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: Sender: linux-media-owner@vger.kernel.org To: Mauro Carvalho Chehab , Hans Verkuil Cc: Eddie Huang , Yingjoe Chen , linux-media@vger.kernel.org, linux-mediatek@lists.infradead.org, Tiffany Lin List-Id: linux-mediatek@lists.infradead.org In v4l2-compliance utility, test QUERYBUF required correct length value to go through each planar to check planar's length in multi-planar Signed-off-by: Tiffany Lin --- drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c index 327e83a..5ba932a 100644 --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c @@ -521,6 +521,9 @@ static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user if (num_planes == 0) return 0; + if (put_user(kp->length, &up->length)) + return -EFAULT; + uplane = (__force struct v4l2_plane __user *)kp->m.planes; if (get_user(p, &up->m.planes)) return -EFAULT; -- 1.7.9.5