/usr/share/doc/python-libxml2-dbg/NEWS.gz is in python-libxml2-dbg 2.9.4+dfsg1-6.1ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/python-libxml2-dbg/changelog.gz
/usr/share/doc/python-libxml2-dbg/changelog.gz