/usr/lib/x86_64-linux-gnu/librte_cfgfile.so is in libdpdk-dev 17.11.1-6.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/librte_cfgfile.so.17.11
/usr/lib/x86_64-linux-gnu/librte_cfgfile.so.17.11