This file is indexed.

/usr/lib/x86_64-linux-gnu/libIlmImf.so.6 is in libopenexr6 1.6.1-8.

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

It is a symlink to /usr/lib/x86_64-linux-gnu/libIlmImf.so.6.0.0