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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 22:02:21 +0200 |
| commit | af682e4d2eeb26f46a745a71c72c507b1d5db378 (patch) | |
| tree | f8cf91d94d531f508af957f108d99bb7b73b7c40 | |
| parent | 6d7f466d72344592cc8d3b429c081b11a8b250e1 (diff) | |
| download | ffmpeg-af682e4d2eeb26f46a745a71c72c507b1d5db378.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>
(cherry picked from commit 849138f476f4b08656681bfc3aec5beac47777fb)
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 1f07696d21..f9f679f68d 100644 --- a/libavformat/wavdec.c +++ b/libavformat/wavdec.c @@ -479,6 +479,8 @@ 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); |