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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-02-16 18:32:31 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-01 12:49:26 +0200 |
| commit | 35a451d49012b2ccc12c9eb729bbc86a5373ae95 (patch) | |
| tree | 10eb156b9bb6500be1401230949647fdf65b4e8f | |
| parent | d7e9a720609c0e2be6c73fcd8401b3600f605b74 (diff) | |
| download | ffmpeg-35a451d49012b2ccc12c9eb729bbc86a5373ae95.tar.gz | |
avformat/swfenc: Fix integer overflow in frame rate handling
Fixes: signed integer overflow: 30000299 * 256 cannot be represented in type 'int'
Fixes: ticket8184
Found-by: Suhwan
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 31f956acadd994b8c4e22b714aaffee0f527c827)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/swfenc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavformat/swfenc.c b/libavformat/swfenc.c index 3733a0442c..81035469f7 100644 --- a/libavformat/swfenc.c +++ b/libavformat/swfenc.c @@ -256,7 +256,7 @@ static int swf_write_header(AVFormatContext *s) av_log(s, AV_LOG_ERROR, "Invalid (too large) frame rate %d/%d\n", rate, rate_base); return AVERROR(EINVAL); } - avio_wl16(pb, (rate * 256) / rate_base); /* frame rate */ + avio_wl16(pb, (rate * 256LL) / rate_base); /* frame rate */ swf->duration_pos = avio_tell(pb); avio_wl16(pb, (uint16_t)(DUMMY_DURATION * (int64_t)rate / rate_base)); /* frame count */ |