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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-06-16 21:01:50 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-06-29 19:22:19 +0200 |
| commit | fb4a4557d15bce601e2462207648741600fa273f (patch) | |
| tree | 7e4ae448777f2b51ded21cf0db219fce5fa5d7a3 | |
| parent | ac9af7e9a5befa8a554bacbcc59ab2f11203d85e (diff) | |
| download | ffmpeg-streaming-fb4a4557d15bce601e2462207648741600fa273f.zip ffmpeg-streaming-fb4a4557d15bce601e2462207648741600fa273f.tar.gz | |
avcodec/atrac9dec: Check q_unit_cnt in parse_band_ext()
Fixes: global-buffer-overflow
Fixes: 15247/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ATRAC9_fuzzer-5671602181636096
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/atrac9dec.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavcodec/atrac9dec.c b/libavcodec/atrac9dec.c index 08fe483..4d490da 100644 --- a/libavcodec/atrac9dec.c +++ b/libavcodec/atrac9dec.c @@ -202,6 +202,8 @@ static inline int parse_band_ext(ATRAC9Context *s, ATRAC9BlockData *b, int ext_band = 0; if (b->has_band_ext) { + if (b->q_unit_cnt < 13) + return AVERROR_INVALIDDATA; ext_band = at9_tab_band_ext_group[b->q_unit_cnt - 13][2]; if (stereo) { b->channel[1].band_ext = get_bits(gb, 2); |
