From 4c80dceeb9d4a53a505139c3e45a6128c326e2bd Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sat, 30 Dec 2023 03:06:39 +0100 Subject: [PATCH] avcodec/mpegvideo_enc: Dont copy beyond the image Fixes: out of array access Fixes: tickets/10754/poc17ffmpeg Discovered by Zeng Yunxiang. Signed-off-by: Michael Niedermayer (cherry picked from commit a066b8a809fa6d8b31398d41787822803f8762f2) Signed-off-by: Michael Niedermayer --- libavcodec/mpegvideo_enc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c index 8d7ffe5703..a5d3a06f55 100644 --- a/libavcodec/mpegvideo_enc.c +++ b/libavcodec/mpegvideo_enc.c @@ -1254,7 +1254,7 @@ 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;