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authorMichael Niedermayer <michael@niedermayer.cc>2017-02-19 18:47:13 +0100
committerMichael Niedermayer <michael@niedermayer.cc>2017-02-19 19:48:57 +0100
commit706757d26dd5e606c1745a4bb53fe45f6d6493cf (patch)
treee4b364658c1003c4ea22dade19d5e0d7750c077a /libavcodec/mpeg12dec.c
parenta9f3e4b138fc14f7512fde821c051fe1ff7f124f (diff)
downloadffmpeg-706757d26dd5e606c1745a4bb53fe45f6d6493cf.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>
Diffstat (limited to 'libavcodec/mpeg12dec.c')
-rw-r--r--libavcodec/mpeg12dec.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/mpeg12dec.c b/libavcodec/mpeg12dec.c
index f3cf6eb0bf..5f86029660 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;
}
}
}