/usr/lib/libxdg-basedir.so.1 is in libxdg-basedir1 1.1.1-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libxdg-basedir.so.1.1.0
/usr/lib/libxdg-basedir.so.1.1.0