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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-01-31 16:30:59 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-10-17 21:34:53 +0200 |
| commit | 4518df79378d3429948409cee696f52d13131a3c (patch) | |
| tree | 6dd2ed6a0db245dbcf4a2b36b0e03b6aec290b29 | |
| parent | ab5341768c630c7a691027ba80a16a0f2b1da764 (diff) | |
| download | ffmpeg-4518df79378d3429948409cee696f52d13131a3c.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>
(cherry picked from commit a0ceb0cdd41b56241697cd8f83e22cdb4822d2d9)
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 38f537af1b..c7ffae87ed 100644 --- a/libavformat/avidec.c +++ b/libavformat/avidec.c @@ -130,7 +130,7 @@ 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; } |