static void __address_space_init_once(struct address_space *mapping)
{
	INIT_RADIX_TREE(&mapping->i_pages, GFP_ATOMIC | __GFP_ACCOUNT);
	init_rwsem(&mapping->i_mmap_rwsem);
	INIT_LIST_HEAD(&mapping->private_list);
	spin_lock_init(&mapping->private_lock);
	mapping->i_mmap = RB_ROOT_CACHED;
}

The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.