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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-11-01 20:20:02 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-11 21:23:48 +0200 |
| commit | 8d4d02c13a1e68f8de7647af16f20178d5a1e792 (patch) | |
| tree | b35180b5e014a48eb612cbfd8af065f4325ba43f | |
| parent | 9a523ef89f0538cb0b6d8c694188dfa043264872 (diff) | |
| download | ffmpeg-8d4d02c13a1e68f8de7647af16f20178d5a1e792.tar.gz | |
avformat/vqf: Check len for COMM chunks
Fixes: Infinite loop
Fixes: 26696/clusterfuzz-testcase-minimized-ffmpeg_dem_VQF_fuzzer-5648269168082944
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 a834af133b1fe8f29b4075808710ffd98abcac40)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/vqf.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavformat/vqf.c b/libavformat/vqf.c index ff38a3d1ca..f43a20d6fc 100644 --- a/libavformat/vqf.c +++ b/libavformat/vqf.c @@ -132,6 +132,9 @@ static int vqf_read_header(AVFormatContext *s) switch(chunk_tag){ case MKTAG('C','O','M','M'): + if (len < 12) + return AVERROR_INVALIDDATA; + avio_read(s->pb, comm_chunk, 12); st->codecpar->channels = AV_RB32(comm_chunk ) + 1; read_bitrate = AV_RB32(comm_chunk + 4); |