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avcodec/vp9: use av_freep() for above_partition_ctx

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Fixes use after free if memory allocation fails.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2013-11-10 19:16:14 +00:00
parent 0062869ae2
commit e1c7892013
1 changed files with 1 additions and 1 deletions
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libavcodec/vp9.c
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@ -254,7 +254,7 @@ static int update_size(AVCodecContext *ctx, int w, int h)
s->rows = (h + 7) >> 3; s->rows = (h + 7) >> 3;
#define assign(var, type, n) var = (type) p; p += s->sb_cols * n * sizeof(*var) #define assign(var, type, n) var = (type) p; p += s->sb_cols * n * sizeof(*var)
av_free(s->above_partition_ctx); av_freep(&s->above_partition_ctx);
p = av_malloc(s->sb_cols * (240 + sizeof(*s->lflvl) + 16 * sizeof(*s->above_mv_ctx) + p = av_malloc(s->sb_cols * (240 + sizeof(*s->lflvl) + 16 * sizeof(*s->above_mv_ctx) +
64 * s->sb_rows * (1 + sizeof(*s->mv[0]) * 2))); 64 * s->sb_rows * (1 + sizeof(*s->mv[0]) * 2)));
if (!p) if (!p)