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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-11-23 21:42:23 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-02-20 14:21:24 +0100 |
| commit | 73bc98119c35c30eb4f0c52193c8e6c9947a024e (patch) | |
| tree | f3ace402ebd58938cf9384d662bcb824b1837559 | |
| parent | 4e08ecb7a4b8bff71b2c4af4e8145defae526285 (diff) | |
| download | ffmpeg-73bc98119c35c30eb4f0c52193c8e6c9947a024e.tar.gz | |
avformat/flvdec: Treat high ts byte as unsigned
Fixes: left shift of 255 by 24 places cannot be represented in type 'int'
Fixes: 27516/clusterfuzz-testcase-minimized-ffmpeg_dem_KUX_fuzzer-5152854660349952
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit f514113cfa9fc44d80086bb2a2b783e8026dc3a9)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/flvdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c index cd913d32d8..334a5f4a7c 100644 --- a/libavformat/flvdec.c +++ b/libavformat/flvdec.c @@ -1179,7 +1179,7 @@ retry_duration: avio_seek(s->pb, fsize - 3 - size, SEEK_SET); if (size == avio_rb24(s->pb) + 11) { uint32_t ts = avio_rb24(s->pb); - ts |= avio_r8(s->pb) << 24; + ts |= (unsigned)avio_r8(s->pb) << 24; if (ts) s->duration = ts * (int64_t)AV_TIME_BASE / 1000; else if (fsize >= 8 && fsize - 8 >= size) { |