/usr/lib/x86_64-linux-gnu/libopenal.so.1 is in libopenal1 1:1.15.1-5.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libopenal.so.1.15.1
/usr/lib/x86_64-linux-gnu/libopenal.so.1.15.1