[media] uvcvideo: Fix ENUMINPUT handling
authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Wed, 21 Mar 2012 12:50:36 +0000 (09:50 -0300)
committerMauro Carvalho Chehab <mchehab@redhat.com>
Tue, 8 May 2012 16:45:53 +0000 (13:45 -0300)
Properly validate the user-supplied index against the number of inputs.
The code used the pin local variable instead of the index by mistake.

Reported-by: Jozef Vesely <vesely@gjh.sk>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: stable@vger.kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
drivers/media/video/uvc/uvc_v4l2.c

index a3322ed..759bef8 100644 (file)
@@ -694,7 +694,7 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg)
                                        break;
                        }
                        pin = iterm->id;
-               } else if (pin < selector->bNrInPins) {
+               } else if (index < selector->bNrInPins) {
                        pin = selector->baSourceID[index];
                        list_for_each_entry(iterm, &chain->entities, chain) {
                                if (!UVC_ENTITY_IS_ITERM(iterm))