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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-12-23 20:43:47 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-12-25 11:59:47 +0100 |
| commit | f3a949dc4c6f01f43d502cbe2a7c06fe95114c79 (patch) | |
| tree | da43a490a872ed478dad3ab61842bef6c52e38c9 /libavformat/mvdec.c | |
| parent | 10add8bb66b7c9d5999aa5b5a37eef3df27e934a (diff) | |
| download | ffmpeg-f3a949dc4c6f01f43d502cbe2a7c06fe95114c79.tar.gz | |
avformat/mvdec: Check bytes_per_sample
Fixes: division by zero
Fixes: 42814/clusterfuzz-testcase-minimized-ffmpeg_dem_MV_fuzzer-4787014237552640
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Peter Ross <pross@xvid.org>
Reviewed-by: John-Paul Stewart <jpstewart@personalprojects.net>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavformat/mvdec.c')
| -rw-r--r-- | libavformat/mvdec.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavformat/mvdec.c b/libavformat/mvdec.c index 1a5012e507..ea955d2b11 100644 --- a/libavformat/mvdec.c +++ b/libavformat/mvdec.c @@ -366,6 +366,9 @@ static int mv_read_header(AVFormatContext *avctx) avpriv_request_sample(avctx, "Audio compression (format %i)", v); } + if (bytes_per_sample == 0) + return AVERROR_INVALIDDATA; + if (set_channels(avctx, ast, avio_rb32(pb)) < 0) return AVERROR_INVALIDDATA; |