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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-19 16:54:28 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-02-02 14:18:20 +0100 |
| commit | 31f9d1ec36bb6239b6ea25a7d3e47c9a90709270 (patch) | |
| tree | fa69f075654a4da6e33afad68cfa04122cb0619f | |
| parent | eb4301d5f899087a99e391db626e4e1e72ca5384 (diff) | |
| download | ffmpeg-31f9d1ec36bb6239b6ea25a7d3e47c9a90709270.tar.gz | |
avformat/cdg: Fix integer overflow in duration computation
Fixes: signed integer overflow: 8398407 * 300 cannot be represented in type 'int'
Fixes: 23914/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-4702539290509312
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 aa8935b395162f8438d1f055e671e92685ed1586)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/cdg.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavformat/cdg.c b/libavformat/cdg.c index 05cac6e528..f933819d57 100644 --- a/libavformat/cdg.c +++ b/libavformat/cdg.c @@ -49,7 +49,7 @@ static int read_header(AVFormatContext *s) if (ret < 0) { av_log(s, AV_LOG_WARNING, "Cannot calculate duration as file size cannot be determined\n"); } else - vst->duration = (ret * vst->time_base.den) / (CDG_PACKET_SIZE * 300); + vst->duration = (ret * (int64_t)vst->time_base.den) / (CDG_PACKET_SIZE * 300); return 0; } |