This file is indexed.

/usr/lib/x86_64-linux-gnu/libGLEWmx.so is in libglewmx-dev 1.13.0-4.

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

It is a symlink to /usr/lib/x86_64-linux-gnu/libGLEWmx.so.1.13.0