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| author | Alberto Delmás <adelmas@gmail.com> | 2012-11-11 09:47:39 +0100 |
|---|---|---|
| committer | Kostya Shishkov <kostya.shishkov@gmail.com> | 2012-11-11 16:07:50 +0100 |
| commit | 802713c4e7b41bc2deed754d78649945c3442063 (patch) | |
| tree | e819205a65d461d259fdaa7741ec96a3c83ee369 | |
| parent | 6d93308c0ca3783b3278aef8e6e64d8f0558f319 (diff) | |
| download | ffmpeg-802713c4e7b41bc2deed754d78649945c3442063.tar.gz | |
mss2: prevent potential uninitialized reads
The alternative to zeroing on init is setting the corrupted flag in
all cases where pal_pic is not fully written, at the cost of added
complexity.
Signed-off-by: Kostya Shishkov <kostya.shishkov@gmail.com>
| -rw-r--r-- | libavcodec/mss2.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/mss2.c b/libavcodec/mss2.c index 5f99b7afa4..bec3f45075 100644 --- a/libavcodec/mss2.c +++ b/libavcodec/mss2.c @@ -839,8 +839,8 @@ static av_cold int mss2_decode_init(AVCodecContext *avctx) if (ret = ff_mss12_decode_init(c, 1, &ctx->sc[0], &ctx->sc[1])) return ret; c->pal_stride = c->mask_stride; - c->pal_pic = av_malloc(c->pal_stride * avctx->height); - c->last_pal_pic = av_malloc(c->pal_stride * avctx->height); + c->pal_pic = av_mallocz(c->pal_stride * avctx->height); + c->last_pal_pic = av_mallocz(c->pal_stride * avctx->height); if (!c->pal_pic || !c->last_pal_pic) { mss2_decode_end(avctx); return AVERROR(ENOMEM); |