tree 2b2902e6b1c0d91f4fedd804af47ff33dbae42e1
parent e82db75d06ac331ae39b07f57539df3c51d19b94
author Dan Carpenter <dan.carpenter@oracle.com> 1325741277 -0300
committer Mauro Carvalho Chehab <mchehab@redhat.com> 1325944042 -0200

[media] V4L/DVB: v4l2-ioctl: integer overflow in video_usercopy()

If ctrls->count is too high the multiplication could overflow and
array_size would be lower than expected.  Mauro and Hans Verkuil
suggested that we cap it at 1024.  That comes from the maximum
number of controls with lots of room for expantion.

$ grep V4L2_CID include/linux/videodev2.h | wc -l
211

Cc: stable <stable@vger.kernel.org>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>