This file is indexed.

/usr/lib/x86_64-linux-gnu/liberis-1.3.so.21 is in liberis-1.3-21 1.3.23-6ubuntu1.

This file is owned by root:root, with mode 0o777.

It is a symlink to /usr/lib/x86_64-linux-gnu/liberis-1.3.so.21.0.0