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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-12-03 21:33:18 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-12-31 19:51:57 +0100 |
| commit | 3bd30882b1d50e45cbb97e754b361982dfc81e8e (patch) | |
| tree | ed657d4f78bb3dd0f17ba0de2d75f4bf2051c60e | |
| parent | 573cfcc52b8df0e1490257dcb6a823b0259e6448 (diff) | |
| download | ffmpeg-3bd30882b1d50e45cbb97e754b361982dfc81e8e.tar.gz | |
avcodec/atrac9dec: Check q_unit_cnt more completely before using it to access at9_tab_band_ext_group
Fixes: index 8 out of bounds for type 'const uint8_t [8][3]'
Fixes: 19127/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ATRAC9_fuzzer-5709394985091072
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Lynne <dev@lynne.ee>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit e1d836d2375c93cbc44a2b0d34e404682c1e8436)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/atrac9dec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/atrac9dec.c b/libavcodec/atrac9dec.c index 6d4e6d8ec5..71c4d8330b 100644 --- a/libavcodec/atrac9dec.c +++ b/libavcodec/atrac9dec.c @@ -202,7 +202,7 @@ 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) + if (b->q_unit_cnt < 13 || b->q_unit_cnt > 20) return AVERROR_INVALIDDATA; ext_band = at9_tab_band_ext_group[b->q_unit_cnt - 13][2]; if (stereo) { |