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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-12-25 22:02:13 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2023-04-07 23:40:40 +0200 |
| commit | 2a47fecb09b9b2dd3740559b94b040594a4fda2d (patch) | |
| tree | 835b24c7377efe5d4f061728779228b174e4fcdf | |
| parent | 9f828f147bbdd80cc55c4baedfe1b7f5fd864283 (diff) | |
| download | ffmpeg-2a47fecb09b9b2dd3740559b94b040594a4fda2d.tar.gz | |
avformat/mxfdec: Use 64bit in remainder
Fixes: signed integer overflow: 48000 * 223587 cannot be represented in type 'int'
Fixes: 54513/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-5817594836025344
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Tomas Härdin <git@haerdin.se>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 64a04fc165d453fe49906b228ac16385eda28564)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/mxfdec.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c index d37eeb603a..32c2464fb1 100644 --- a/libavformat/mxfdec.c +++ b/libavformat/mxfdec.c @@ -3516,8 +3516,8 @@ static int64_t mxf_compute_sample_count(MXFContext *mxf, AVStream *st, if ((sample_rate.num / sample_rate.den) == 48000) { return av_rescale_q(edit_unit, sample_rate, track->edit_rate); } else { - int remainder = (sample_rate.num * time_base.num) % - (time_base.den * sample_rate.den); + int64_t remainder = (sample_rate.num * (int64_t) time_base.num) % + ( time_base.den * (int64_t)sample_rate.den); if (remainder) av_log(mxf->fc, AV_LOG_WARNING, "seeking detected on stream #%d with time base (%d/%d) and " |