int ovl_setattr(struct dentry *dentry, struct iattr *attr)
{
	int err;
	struct dentry *upperdentry;

	err = ovl_want_write(dentry);
	if (err)
		goto out;

	err = ovl_copy_up(dentry);
	if (!err) {
		upperdentry = ovl_dentry_upper(dentry);

		mutex_lock(&upperdentry->d_inode->i_mutex);
		err = notify_change(upperdentry, attr, NULL);
		mutex_unlock(&upperdentry->d_inode->i_mutex);
	}
	ovl_drop_write(dentry);
out:
	return err;
}
Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control.