| | Date | Sun, 27 May 2012 10:05:38 +0900 | | From | Greg KH <> | | Subject | [ 75/94] media: uvcvideo: Fix ENUMINPUT handling |
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3.3-stable review patch. If anyone has any objections, please let me know.
------------------ From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
commit 31c5f0c5e25ed71eeced170f113bb590f2f1f6f3 upstream.
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> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/media/video/uvc/uvc_v4l2.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/media/video/uvc/uvc_v4l2.c +++ b/drivers/media/video/uvc/uvc_v4l2.c @@ -686,7 +686,7 @@ static long uvc_v4l2_do_ioctl(struct fil 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))
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