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avcodec/mpeg_er: Clear mcsel in mpeg_er_decode_mb()

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Fixes out of array read
Should fix: 3516/clusterfuzz-testcase-minimized-4608518562775040 (not reprodoceable)

Found-by: Insu Yun, Georgia Tech.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-10-09 00:32:30 +02:00
parent e38f280fec
commit 127a362630
1 changed files with 1 additions and 0 deletions
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libavcodec/mpeg_er.c
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@ -71,6 +71,7 @@ static void mpeg_er_decode_mb(void *opaque, int ref, int mv_dir, int mv_type,
s->mb_skipped = mb_skipped;
s->mb_x = mb_x;
s->mb_y = mb_y;
s->mcsel = 0;
memcpy(s->mv, mv, sizeof(*mv));
ff_init_block_index(s);