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avcodec/svq3: Dont memcpy AVFrame

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This avoids out of array accesses

Fixes: asan_heap-uaf_21f42e4_9_asan_heap-uaf_21f42e4_278_gl2.mov

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 075a165d27)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-10-04 00:13:26 +02:00
parent c0c24bc9b3
commit 506368f563
1 changed files with 1 additions and 1 deletions
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2
libavcodec/svq3.c
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@ -1176,7 +1176,7 @@ static int svq3_decode_frame(AVCodecContext *avctx, void *data,
h->cur_pic_ptr = s->cur_pic;
av_frame_unref(&h->cur_pic.f);
h->cur_pic = *s->cur_pic;
memcpy(&h->cur_pic.tf, &s->cur_pic->tf, sizeof(h->cur_pic) - offsetof(H264Picture, tf));
ret = av_frame_ref(&h->cur_pic.f, &s->cur_pic->f);
if (ret < 0)
return ret;