/usr/share/icons/elementary/status/12/ is in elementary-icon-theme 2.7.1-0ubuntu6.
This file is owned by root:root, with mode 0o755.
..
/usr/share/icons/elementary/status/12/not-starred.svg
/usr/share/icons/elementary/status/12/starred.svg
/usr/share/icons/elementary/status/128/aptdaemon-add.svg
/usr/share/icons/elementary/status/128/aptdaemon-download.svg
/usr/share/icons/elementary/status/128/aptdaemon-working.svg
/usr/share/icons/elementary/status/128/dialog-error.svg
/usr/share/icons/elementary/status/128/dialog-information.svg
/usr/share/icons/elementary/status/128/dialog-question.svg
/usr/share/icons/elementary/status/128/dialog-warning.svg
/usr/share/icons/elementary/status/128/error.svg
/usr/share/icons/elementary/status/128/gnome-unknown.svg
/usr/share/icons/elementary/status/128/gtk-dialog-error.svg
/usr/share/icons/elementary/status/128/gtk-dialog-info.svg
/usr/share/icons/elementary/status/128/gtk-dialog-question.svg
/usr/share/icons/elementary/status/128/gtk-dialog-warning.svg
/usr/share/icons/elementary/status/128/image-missing.svg
/usr/share/icons/elementary/status/128/important.svg
/usr/share/icons/elementary/status/128/info.svg
/usr/share/icons/elementary/status/128/mail-unread.svg
/usr/share/icons/elementary/status/128/messagebox_critical.svg
/usr/share/icons/elementary/status/128/messagebox_info.svg
/usr/share/icons/elementary/status/128/messagebox_warning.svg
/usr/share/icons/elementary/status/128/stock_dialog-error.svg
/usr/share/icons/elementary/status/128/stock_dialog-info.svg
/usr/share/icons/elementary/status/128/stock_dialog-question.svg
/usr/share/icons/elementary/status/128/stock_dialog-warning.svg
/usr/share/icons/elementary/status/128/stock_unknown.svg
/usr/share/icons/elementary/status/128/xfce-unknown.svg