Fix for CVE-2014-4698
Patch:
http://git.php.net/?p=php-src.git;a=commitdiff;h=22882a9d89712ff2b6ebc20a689a89452bba4dcd

Hand crafted patch for php 5.3 from above due to context differences.

--- php-5.3.29/ext/spl/spl_array.c_orig	2014-08-13 12:22:50.000000000 -0700
+++ php-5.3.29/ext/spl/spl_array.c	2014-11-04 14:31:14.198629945 -0800
@@ -1843,6 +1843,7 @@
 	int buf_len;
 	spl_array_object *intern = (spl_array_object*)zend_object_store_get_object(getThis() TSRMLS_CC);
 	int was_in_unserialize = intern->unserialize_data != NULL;
+	HashTable *aht;
 
 	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &buf, &buf_len) == FAILURE) {
 		return;
@@ -1853,6 +1854,12 @@
 		return;
 	}
 
+    aht = spl_array_get_hash_table(intern, 0 TSRMLS_CC);
+	if (aht->nApplyCount > 0) {
+		zend_error(E_WARNING, "Modification of ArrayObject during sorting is prohibited");
+		return;
+	}
+
 	if (!was_in_unserialize) {
 		intern->unserialize_data = emalloc(sizeof(php_unserialize_data_t));
 		PHP_VAR_UNSERIALIZE_INIT(*intern->unserialize_data);
--- php-5.3.29/ext/spl/tests/bug67539.phpt_orig	2014-11-04 14:32:52.307769425 -0800
+++ php-5.3.29/ext/spl/tests/bug67539.phpt	2014-11-04 14:33:24.460710922 -0800
@@ -0,0 +1,15 @@
+--TEST--
+Bug #67539 (ArrayIterator use-after-free due to object change during sorting)
+--FILE--
+<?php
+
+$it = new ArrayIterator(array_fill(0,2,'X'), 1 );
+
+function badsort($a, $b) {
+        $GLOBALS['it']->unserialize($GLOBALS['it']->serialize());
+        return TRUE;
+}
+
+$it->uksort('badsort');
+--EXPECTF--
+Warning: Modification of ArrayObject during sorting is prohibited in %sbug67539.php on line %d