/usr/lib/x86_64-linux-gnu/libgerbv.so is in gerbv 2.6.1-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libgerbv.so.1.0.7
/usr/lib/x86_64-linux-gnu/libgerbv.so.1.0.7