ffmpeg | branch: master | Michael Niedermayer <michael@niedermayer.cc> | Thu Sep 30 17:52:53 2021 +0200| [9f40b5badbead0f454f195e88b4dc7950b40f665] | committer: Michael Niedermayer swscale/swscale_internal: Avoid unsigned for slice parameters Mixing unsigned and signed often leads to unexpected arithmetic results. Fixes: out of array write Found-by: Paul B Mahol <onemda@gmail.com> Reviewed-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=9f40b5badbead0f454...

libswscale/swscale_internal.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libswscale/swscale_internal.h b/libswscale/swscale_internal.h index e6e7b934b6..708facba67 100644 --- a/libswscale/swscale_internal.h +++ b/libswscale/swscale_internal.h @@ -311,8 +311,8 @@ typedef struct SwsContext { int nb_slice_ctx; // values passed to current sws_receive_slice() call - unsigned int dst_slice_start; - unsigned int dst_slice_height; + int dst_slice_start; + int dst_slice_height; /** * Note that src, dst, srcStride, dstStride will be copied in the