/usr/lib/x86_64-linux-gnu/libkmlbase.so is in libkml-dev 1.3.0-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libkmlbase.so.1
/usr/lib/x86_64-linux-gnu/libkmlbase.so.1