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avcodec/mpegvideo_enc: Dont copy beyond the image

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Fixes: out of array access
Fixes: tickets/10754/poc17ffmpeg

Discovered by Zeng Yunxiang.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit a066b8a809)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2023-12-30 03:06:39 +01:00
parent a83c489c02
commit dce4cf6871
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GPG key ID: B18E8928B3948D64
1 changed files with 1 additions and 1 deletions
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2
libavcodec/mpegvideo_enc.c
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@ -1196,7 +1196,7 @@ static int load_input_picture(MpegEncContext *s, const AVFrame *pic_arg)
dst += INPLACE_OFFSET;
if (src_stride == dst_stride)
memcpy(dst, src, src_stride * h);
memcpy(dst, src, src_stride * h - src_stride + w);
else {
int h2 = h;
uint8_t *dst2 = dst;