void php_free_shutdown_functions(TSRMLS_D) /* {{{ */
{
	if (BG(user_shutdown_function_names))
		zend_try {
			zend_hash_destroy(BG(user_shutdown_function_names));
			FREE_HASHTABLE(BG(user_shutdown_function_names));
			BG(user_shutdown_function_names) = NULL;
		} zend_catch {
			/* maybe shutdown method call exit, we just ignore it */
			FREE_HASHTABLE(BG(user_shutdown_function_names));
			BG(user_shutdown_function_names) = NULL;
		} zend_end_try();
}
/* }}} */

This category addresses vulnerabilities caused by flawed access control mechanisms, where incorrect permission settings allow unauthorized users to access restricted resources.