/usr/lib/x86_64-linux-gnu/libcom_err.so is in comerr-dev 2.1-1.42.9-3ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /lib/x86_64-linux-gnu/libcom_err.so.2
/lib/x86_64-linux-gnu/libcom_err.so.2