/usr/share/xml/docbook/schema/dtd/4.1.2/ is in docbook-xml 4.5-7.3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/xml/docbook/schema/dtd/4.1.2/calstblx.dtd
/usr/share/xml/docbook/schema/dtd/4.1.2/catalog
/usr/share/xml/docbook/schema/dtd/4.1.2/catalog.xml
/usr/share/xml/docbook/schema/dtd/4.1.2/dbcentx.mod
/usr/share/xml/docbook/schema/dtd/4.1.2/dbgenent.mod
/usr/share/xml/docbook/schema/dtd/4.1.2/dbhierx.mod
/usr/share/xml/docbook/schema/dtd/4.1.2/dbnotnx.mod
/usr/share/xml/docbook/schema/dtd/4.1.2/dbpoolx.mod
/usr/share/xml/docbook/schema/dtd/4.1.2/docbook.cat
/usr/share/xml/docbook/schema/dtd/4.1.2/docbookx.dtd
/usr/share/xml/docbook/schema/dtd/4.1.2/ent
/usr/share/xml/docbook/schema/dtd/4.1.2/soextblx.dtd