diff -Nur php5-5.2.4/ext/standard/file.c php5-5.2.4.new/ext/standard/file.c
--- php5-5.2.4/ext/standard/file.c	2008-07-16 09:56:05.000000000 -0400
+++ php5-5.2.4.new/ext/standard/file.c	2008-07-16 09:56:18.000000000 -0400
@@ -2518,6 +2518,11 @@
 		== FAILURE) 
 		return;
 	
+	if (filename_len >= MAXPATHLEN) {
+		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Filename exceeds the maximum allowed length of %d characters", MAXPATHLEN);
+		RETURN_FALSE;
+	}
+
 	RETURN_BOOL( ! fnmatch( pattern, filename, flags ));
 }
 /* }}} */