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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 20:30:30 +0200 |
| commit | 7daa138f6819ef5ec65fd6af52aeb2ebb0ed9486 (patch) | |
| tree | 544a4b551d913f614ab30a99de93ae24315adafb /libavcodec | |
| parent | 3d1903acfee865935b73957e1b4df5ae090c93f9 (diff) | |
| download | ffmpeg-7daa138f6819ef5ec65fd6af52aeb2ebb0ed9486.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>
(cherry picked from commit fb4a4557d15bce601e2462207648741600fa273f)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec')
| -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 11b683d136..ff4991a573 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); |