/usr/lib/x86_64-linux-gnu/libmx-2.0.so.0 is in libmx-2.0-0 1.99.4-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libmx-2.0.so.0.9904.0
/usr/lib/x86_64-linux-gnu/libmx-2.0.so.0.9904.0