avcodec/ituh263dec: make while get_bits loop more robust by checking bits left
authorMichael Niedermayer <michaelni@gmx.at>
Wed, 30 Oct 2013 13:23:30 +0000 (14:23 +0100)
committerMichael Niedermayer <michaelni@gmx.at>
Wed, 30 Oct 2013 14:00:38 +0000 (15:00 +0100)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
libavcodec/ituh263dec.c

index 2cad21d..5fbf89f 100644 (file)
@@ -1115,6 +1115,8 @@ int ff_h263_decode_picture_header(MpegEncContext *s)
     /* PEI */
     while (get_bits1(&s->gb) != 0) {
         skip_bits(&s->gb, 8);
+        if (get_bits_left(&s->gb) <= 0)
+            return AVERROR_INVALIDDATA;
     }
 
     if(s->h263_slice_structured){