diff options
| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-25 16:35:40 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-06-16 01:05:27 +0200 |
| commit | 8cbe7461b364ef86c31ec56fd903aa6cb6d82c5f (patch) | |
| tree | 847b39130625f4aa5bdbaa317d0d8de2e29c3823 | |
| parent | fdba18c0683b8eb194eb26356efc5cbaf0dc406c (diff) | |
| download | ffmpeg-8cbe7461b364ef86c31ec56fd903aa6cb6d82c5f.tar.gz | |
avcodec/diracdec: Fix off by 1 error in quant check
Fixes: out of array read
Fixes: 1781/clusterfuzz-testcase-minimized-4617176877105152
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit b946bd8ef2c7aeee09469a4901182a44f9b67189)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/diracdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/diracdec.c b/libavcodec/diracdec.c index f334f313a6..e73b998e92 100644 --- a/libavcodec/diracdec.c +++ b/libavcodec/diracdec.c @@ -817,7 +817,7 @@ static int decode_hq_slice(DiracContext *s, DiracSlice *slice, uint8_t *tmp_buf) skip_bits_long(gb, 8*s->highquality.prefix_bytes); quant_idx = get_bits(gb, 8); - if (quant_idx > DIRAC_MAX_QUANT_INDEX) { + if (quant_idx > DIRAC_MAX_QUANT_INDEX - 1) { av_log(s->avctx, AV_LOG_ERROR, "Invalid quantization index - %i\n", quant_idx); return AVERROR_INVALIDDATA; } |