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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-02-19 18:47:13 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-16 16:00:21 +0200 |
| commit | eb322e44eaa24d39c55ce86a42410bf5945fe31e (patch) | |
| tree | 7cb9fc96c865bc78d38643110d3919302af6713b | |
| parent | a6b5e670f49e561254395d57fbedd719f1b3c715 (diff) | |
| download | ffmpeg-eb322e44eaa24d39c55ce86a42410bf5945fe31e.tar.gz | |
avcodec/mpeg12dec: Fix runtime error: left shift of negative value
Fixes: 608/clusterfuzz-testcase-603978286392934
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 706757d26dd5e606c1745a4bb53fe45f6d6493cf)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/mpeg12dec.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/mpeg12dec.c b/libavcodec/mpeg12dec.c index 24c3182273..f098438342 100644 --- a/libavcodec/mpeg12dec.c +++ b/libavcodec/mpeg12dec.c @@ -865,8 +865,8 @@ static int mpeg_decode_mb(MpegEncContext *s, int16_t block[12][64]) s->last_mv[i][0][1]); /* full_pel: only for MPEG-1 */ if (s->full_pel[i]) { - s->mv[i][0][0] <<= 1; - s->mv[i][0][1] <<= 1; + s->mv[i][0][0] *= 2; + s->mv[i][0][1] *= 2; } } } |