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avcodec/svq3: Reject dx/dy beyond 16bit

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The code does use 16bit sized arrays later so larger deltas would not work

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 48b3117844)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-04-27 15:10:26 +02:00
parent 65a9d0c66c
commit 78fd652af4
1 changed files with 1 additions and 1 deletions
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2
libavcodec/svq3.c
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@ -551,7 +551,7 @@ static inline int svq3_mc_dir(SVQ3Context *s, int size, int mode,
dy = get_interleaved_se_golomb(&s->gb_slice);
dx = get_interleaved_se_golomb(&s->gb_slice);
if (dx == INVALID_VLC || dy == INVALID_VLC) {
if (dx != (int16_t)dx || dy != (int16_t)dy) {
av_log(s->avctx, AV_LOG_ERROR, "invalid MV vlc\n");
return -1;
}