diff options
| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-09-02 23:13:00 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-10-17 21:34:53 +0200 |
| commit | 3631f0932660ca530187f660158f32efb861c1a0 (patch) | |
| tree | cf799ce1ba78c1c58385755086428034a31b4d99 | |
| parent | 322563a61dd59c340df08449f4a870577b991c3f (diff) | |
| download | ffmpeg-3631f0932660ca530187f660158f32efb861c1a0.tar.gz | |
avformat/dxa: Use av_rescale() for duration computation
Fixes: signed integer overflow: 8224000000 * 1629552639 cannot be represented in type 'long'
Fixes: 24908/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-4658478506049536
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 c313089fbe1df71b5406dd9d7e4d36361051c620)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/dxa.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavformat/dxa.c b/libavformat/dxa.c index 228e6fdca1..d560fbf838 100644 --- a/libavformat/dxa.c +++ b/libavformat/dxa.c @@ -143,7 +143,7 @@ static int dxa_read_header(AVFormatContext *s) c->readvid = !c->has_sound; c->vidpos = avio_tell(pb); s->start_time = 0; - s->duration = (int64_t)c->frames * AV_TIME_BASE * num / den; + s->duration = av_rescale(c->frames, AV_TIME_BASE * (int64_t)num, den); av_log(s, AV_LOG_DEBUG, "%d frame(s)\n",c->frames); return 0; |