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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-10-04 23:54:46 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-10-09 11:42:16 +0200 |
| commit | 849138f476f4b08656681bfc3aec5beac47777fb (patch) | |
| tree | 716a0b15a469db95f6cea5acbebcbb52058fac8a | |
| parent | 8fe3566b8fdf4bcf5eed419c1aab6eb848287ff3 (diff) | |
| download | ffmpeg-849138f476f4b08656681bfc3aec5beac47777fb.tar.gz | |
avformat/wavdec: Check smv_block_size
Fixes: Timeout
Fixes: 39554/clusterfuzz-testcase-minimized-ffmpeg_dem_WAV_fuzzer-4915221701984256
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-- | libavformat/wavdec.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavformat/wavdec.c b/libavformat/wavdec.c index 7a7e765353..01090b6947 100644 --- a/libavformat/wavdec.c +++ b/libavformat/wavdec.c @@ -498,6 +498,8 @@ static int wav_read_header(AVFormatContext *s) wav->smv_data_ofs = avio_tell(pb) + (size - 5) * 3; avio_rl24(pb); wav->smv_block_size = avio_rl24(pb); + if (!wav->smv_block_size) + return AVERROR_INVALIDDATA; avpriv_set_pts_info(vst, 32, 1, avio_rl24(pb)); vst->duration = avio_rl24(pb); avio_rl24(pb); |