/usr/share/ is in cups-filters-core-drivers 1.20.2-0ubuntu3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/cups/
/usr/share/cups/mime/
/usr/share/cups/mime/cupsfilters-ghostscript.convs
/usr/share/cups/mime/cupsfilters-poppler.convs
/usr/share/cups/mime/cupsfilters.convs
/usr/share/cups/mime/cupsfilters.types
/usr/share/doc/
/usr/share/doc/cups-filters-core-drivers/
/usr/share/doc/cups-filters-core-drivers/copyright
/usr/share/man/
/usr/share/man/man1/
/usr/share/man/man1/driverless.1.gz
/usr/share/doc/cups-filters-core-drivers/AUTHORS
/usr/share/doc/cups-filters-core-drivers/NEWS.Debian.gz
/usr/share/doc/cups-filters-core-drivers/README.gz
/usr/share/doc/cups-filters-core-drivers/changelog.Debian.gz