From c377f1a715476934133f3254d1e0d4bf3743e2d2 Mon Sep 17 00:00:00 2001
From: Stanislav Malyshev <stas@php.net>
Date: Tue, 17 Feb 2015 06:53:27 +0100
Subject: [PATCH] Fix bug #68942 (Use after free vulnerability in unserialize()
 with DateTimeZone)

---
 ext/date/php_date.c          | 11 +++++++----
 ext/date/tests/bug68942.phpt |  9 +++++++++
 2 files changed, 16 insertions(+), 4 deletions(-)
 create mode 100644 ext/date/tests/bug68942.phpt

diff --git a/ext/date/php_date.c b/ext/date/php_date.c
index dab29d2..909377b 100644
--- a/ext/date/php_date.c
+++ b/ext/date/php_date.c
@@ -3712,9 +3712,8 @@ static int php_date_timezone_initialize_from_hash(zval **return_value, php_timez
 	zval            **z_timezone = NULL;
 	zval            **z_timezone_type = NULL;
 
-	if (zend_hash_find(myht, "timezone_type", 14, (void**) &z_timezone_type) == SUCCESS) {
+	if (zend_hash_find(myht, "timezone_type", 14, (void**) &z_timezone_type) == SUCCESS && Z_TYPE_PP(z_timezone_type) == IS_LONG) {
 		if (zend_hash_find(myht, "timezone", 9, (void**) &z_timezone) == SUCCESS) {
-			convert_to_long(*z_timezone_type);
 			if (SUCCESS == timezone_initialize(*tzobj, Z_STRVAL_PP(z_timezone) TSRMLS_CC)) {
 				return SUCCESS;
 			}
@@ -3739,7 +3738,9 @@ PHP_METHOD(DateTimeZone, __set_state)
 
 	php_date_instantiate(date_ce_timezone, return_value TSRMLS_CC);
 	tzobj = (php_timezone_obj *) zend_object_store_get_object(return_value TSRMLS_CC);
-	php_date_timezone_initialize_from_hash(&return_value, &tzobj, myht TSRMLS_CC);
+	if(php_date_timezone_initialize_from_hash(&return_value, &tzobj, myht TSRMLS_CC) != SUCCESS) {
+		php_error_docref(NULL, E_ERROR, "Timezone initialization failed");
+	}
 }
 /* }}} */
 
@@ -3755,7 +3756,9 @@ PHP_METHOD(DateTimeZone, __wakeup)
 
 	myht = Z_OBJPROP_P(object);
 	
-	php_date_timezone_initialize_from_hash(&return_value, &tzobj, myht TSRMLS_CC);
+	if(php_date_timezone_initialize_from_hash(&return_value, &tzobj, myht TSRMLS_CC) != SUCCESS) {
+		php_error_docref(NULL, E_ERROR, "Timezone initialization failed");
+	}
 }
 /* }}} */
 
diff --git a/ext/date/tests/bug68942.phpt b/ext/date/tests/bug68942.phpt
new file mode 100644
index 0000000..595cd9f
--- /dev/null
+++ b/ext/date/tests/bug68942.phpt
@@ -0,0 +1,9 @@
+--TEST--
+Bug #68942 (Use after free vulnerability in unserialize() with DateTimeZone).
+--FILE--
+<?php
+$data = unserialize('a:2:{i:0;O:12:"DateTimeZone":2:{s:13:"timezone_type";a:2:{i:0;i:1;i:1;i:2;}s:8:"timezone";s:1:"A";}i:1;R:4;}');
+var_dump($data);
+?>
+--EXPECTF--
+Fatal error: DateTimeZone::__wakeup(): Timezone initialization failed in %s/bug68942.php on line %d
-- 
2.1.4