/usr/lib/x86_64-linux-gnu/libgmsh.so.2 is in libgmsh2 2.8.5+dfsg-1.1+b1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libgmsh.so.2.8.5
/usr/lib/x86_64-linux-gnu/libgmsh.so.2.8.5