patch-2.4.19 linux-2.4.19/drivers/usb/usbvideo.c

• Lines: 13
• Date: Fri Aug 2 17:39:45 2002
• Orig file: linux-2.4.18/drivers/usb/usbvideo.c
• Orig date: Wed Oct 10 23:42:46 2001

diff -urN linux-2.4.18/drivers/usb/usbvideo.c linux-2.4.19/drivers/usb/usbvideo.c
@@ -1737,6 +1737,12 @@
 	 * have - even if the application wants more. That would be
 	 * a big security embarassment!
 	 */
+	 
+	if (count + frame->seqRead_Index < count)
+	{
+		count = -EINVAL;
+		goto read_done;
+	}
 	if ((count + frame->seqRead_Index) > frame->seqRead_Length)
 		count = frame->seqRead_Length - frame->seqRead_Index;