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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-11-01 20:20:02 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-02-02 14:18:21 +0100 |
| commit | 6acd99576bc8c0a5c5e72ae13fd0b9608c930bd2 (patch) | |
| tree | ad56d03c6c7a3def6964b998fedfd9b4571aa8d0 /libavformat/vqf.c | |
| parent | c1f7a4153ef3aefe64695ec01fb66564e2acb51f (diff) | |
| download | ffmpeg-6acd99576bc8c0a5c5e72ae13fd0b9608c930bd2.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>
Diffstat (limited to 'libavformat/vqf.c')
| -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 617a9706f4..449f4061f7 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); |