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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-02-22 03:22:24 +0300 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-20 04:41:33 +0300 |
| commit | bccc669fb16beee133b279418cedfd46c6178831 (patch) | |
| tree | 9912d2c5737191c222dfea925fcfda00cff1925d /libavcodec/mpeg4videodec.c | |
| parent | 38e34f50158bb2f1b8a5d68c95896a0a043d55ba (diff) | |
avcodec/mpeg4video: Fix runtime error: left shift of negative value
Fixes: 644/clusterfuzz-testcase-4726434209726464
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 6179dc8aa7e5fc5358b9614306f93f1adadf22a4)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/mpeg4videodec.c')
| -rw-r--r-- | libavcodec/mpeg4videodec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/mpeg4videodec.c b/libavcodec/mpeg4videodec.c index bb8c59ab0d..25c6ef0493 100644 --- a/libavcodec/mpeg4videodec.c +++ b/libavcodec/mpeg4videodec.c @@ -508,7 +508,7 @@ static inline int get_amv(Mpeg4DecContext *ctx, int n) if (ctx->divx_version == 500 && ctx->divx_build == 413) sum = s->sprite_offset[0][n] / (1 << (a - s->quarter_sample)); else - sum = RSHIFT(s->sprite_offset[0][n] << s->quarter_sample, a); + sum = RSHIFT(s->sprite_offset[0][n] * (1 << s->quarter_sample), a); } else { dx = s->sprite_delta[n][0]; dy = s->sprite_delta[n][1]; |