/usr/share/icons/Gion/24x24/places/ is in gnome-themes-extras 2.22.0-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/icons/Gion/24x24/places/application-x-gnome-saved-search.png
/usr/share/icons/Gion/24x24/places/desktop.png
/usr/share/icons/Gion/24x24/places/emptytrash.png
/usr/share/icons/Gion/24x24/places/folder-remote.png
/usr/share/icons/Gion/24x24/places/folder-saved-search.png
/usr/share/icons/Gion/24x24/places/folder.png
/usr/share/icons/Gion/24x24/places/folder_home.png
/usr/share/icons/Gion/24x24/places/gnome-fs-desktop.png
/usr/share/icons/Gion/24x24/places/gnome-fs-directory.png
/usr/share/icons/Gion/24x24/places/gnome-fs-ftp.png
/usr/share/icons/Gion/24x24/places/gnome-fs-home.png
/usr/share/icons/Gion/24x24/places/gnome-fs-nfs.png
/usr/share/icons/Gion/24x24/places/gnome-fs-share.png
/usr/share/icons/Gion/24x24/places/gnome-fs-smb.png
/usr/share/icons/Gion/24x24/places/gnome-fs-ssh.png
/usr/share/icons/Gion/24x24/places/gnome-fs-trash-empty.png
/usr/share/icons/Gion/24x24/places/gnome-mime-x-directory-smb-share.png
/usr/share/icons/Gion/24x24/places/gnome-stock-trash.png
/usr/share/icons/Gion/24x24/places/gtk-directory.png
/usr/share/icons/Gion/24x24/places/inode-directory.png
/usr/share/icons/Gion/24x24/places/network.png
/usr/share/icons/Gion/24x24/places/stock_folder.png
/usr/share/icons/Gion/24x24/places/trashcan_empty.png
/usr/share/icons/Gion/24x24/places/user-desktop.png
/usr/share/icons/Gion/24x24/places/user-home.png
/usr/share/icons/Gion/24x24/places/user-trash.png
/usr/share/icons/Gion/24x24/places/xfce-trash_empty.png
