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avcodec/lagarith: fix chroma plane width & height 

Fixes out of array read
Fixes: asan_heap-oob_1bf48fa_2513_lag-yuy2.avi
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-11-10 17:30:44 +01:00
parent 73f74f6b16
commit e981de81fe
1 changed files with 6 additions and 6 deletions
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12
libavcodec/lagarith.c
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@ -675,10 +675,10 @@ static int lag_decode_frame(AVCodecContext *avctx,
lag_decode_arith_plane(l, p->data[0], avctx->width, avctx->height,
p->linesize[0], buf + offset_ry,
buf_size - offset_ry);
lag_decode_arith_plane(l, p->data[1], avctx->width / 2,
lag_decode_arith_plane(l, p->data[1], (avctx->width + 1) / 2,
avctx->height, p->linesize[1],
buf + offset_gu, buf_size - offset_gu);
lag_decode_arith_plane(l, p->data[2], avctx->width / 2,
lag_decode_arith_plane(l, p->data[2], (avctx->width + 1) / 2,
avctx->height, p->linesize[2],
buf + offset_bv, buf_size - offset_bv);
break;
@ -702,11 +702,11 @@ static int lag_decode_frame(AVCodecContext *avctx,
lag_decode_arith_plane(l, p->data[0], avctx->width, avctx->height,
p->linesize[0], buf + offset_ry,
buf_size - offset_ry);
lag_decode_arith_plane(l, p->data[2], avctx->width / 2,
avctx->height / 2, p->linesize[2],
lag_decode_arith_plane(l, p->data[2], (avctx->width + 1) / 2,
(avctx->height + 1) / 2, p->linesize[2],
buf + offset_gu, buf_size - offset_gu);
lag_decode_arith_plane(l, p->data[1], avctx->width / 2,
avctx->height / 2, p->linesize[1],
lag_decode_arith_plane(l, p->data[1], (avctx->width + 1) / 2,
(avctx->height + 1) / 2, p->linesize[1],
buf + offset_bv, buf_size - offset_bv);
break;
default: