diff -up php-5.2.17/ext/sockets/sockets.c.CVE-2011-1938 php-5.2.17/ext/sockets/sockets.c
--- php-5.2.17/ext/sockets/sockets.c.CVE-2011-1938	2011-08-19 08:40:08.000000000 +0700
+++ php-5.2.17/ext/sockets/sockets.c	2011-08-19 08:41:11.000000000 +0700
@@ -1176,6 +1176,10 @@ PHP_FUNCTION(socket_connect)
 			break;
 
 		case AF_UNIX:
+                    if (addr_len >= sizeof(s_un.sun_path)) {
+                        php_error_docref(NULL TSRMLS_CC, E_WARNING, "Path too long", php_sock->type);
+                        RETURN_FALSE;
+                    }
 			memset(&s_un, 0, sizeof(struct sockaddr_un));
 
 			s_un.sun_family = AF_UNIX;