/usr/share/xml/ is in ldp-docbook-xsl 0.0.20040321-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/xml/docbook/
/usr/share/xml/docbook/stylesheet/
/usr/share/xml/docbook/stylesheet/ldp/
/usr/share/xml/docbook/stylesheet/ldp/fo/
/usr/share/xml/docbook/stylesheet/ldp/fo/tldp-print.xsl
/usr/share/xml/docbook/stylesheet/ldp/html/
/usr/share/xml/docbook/stylesheet/ldp/html/style.css
/usr/share/xml/docbook/stylesheet/ldp/html/tldp-chapters.xsl
/usr/share/xml/docbook/stylesheet/ldp/html/tldp-common.xsl
/usr/share/xml/docbook/stylesheet/ldp/html/tldp-one-page.xsl
/usr/share/xml/docbook/stylesheet/ldp/html/tldp-sections.xsl
/usr/share/xml/docbook/stylesheet/ldp/ldp-html-chunk.xsl
/usr/share/xml/docbook/stylesheet/ldp/ldp-html-common.xsl
/usr/share/xml/docbook/stylesheet/ldp/ldp-html.xsl
/usr/share/xml/docbook/stylesheet/ldp/ldp-print.xsl