diff options
| -rw-r--r-- | libavcodec/vp3.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libavcodec/vp3.c b/libavcodec/vp3.c index 1d83753314..2050090670 100644 --- a/libavcodec/vp3.c +++ b/libavcodec/vp3.c @@ -543,7 +543,10 @@ static int unpack_superblocks(Vp3DecodeContext *s, GetBitContext *gb) : s->y_superblock_count); int num_coded_frags = 0; - for (i = sb_start; i < sb_end && get_bits_left(gb) > 0; i++) { + for (i = sb_start; i < sb_end; i++) { + if (get_bits_left(gb) < ((s->total_num_coded_frags + num_coded_frags) >> 2)) { + return AVERROR_INVALIDDATA; + } /* iterate through all 16 fragments in a superblock */ for (j = 0; j < 16; j++) { /* if the fragment is in bounds, check its coding status */ |