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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-01-31 16:30:59 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-02-10 12:28:30 +0100 |
| commit | a0ceb0cdd41b56241697cd8f83e22cdb4822d2d9 (patch) | |
| tree | 7c20dcba00863931f75476ad786d9addd12c9069 | |
| parent | 658f0606cba0f866714cbe09af30ec40c4168930 (diff) | |
| download | ffmpeg-a0ceb0cdd41b56241697cd8f83e22cdb4822d2d9.tar.gz | |
avformat/avidec: Use 64bit in get_duration()
Fixes: signed integer overflow: 2147483424 + 8224 cannot be represented in type 'int'
Fixes: 29619/clusterfuzz-testcase-minimized-ffmpeg_dem_AVI_fuzzer-5191424373030912
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/avidec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavformat/avidec.c b/libavformat/avidec.c index 79000f3e81..547eb63b1b 100644 --- a/libavformat/avidec.c +++ b/libavformat/avidec.c @@ -135,7 +135,7 @@ static inline int get_duration(AVIStream *ast, int len) if (ast->sample_size) return len; else if (ast->dshow_block_align) - return (len + ast->dshow_block_align - 1) / ast->dshow_block_align; + return (len + (int64_t)ast->dshow_block_align - 1) / ast->dshow_block_align; else return 1; } |