Patch for 73029

73029.diff

commit 6d16288150be33392a3249e417a0929881feb9a2
Author: Stanislav Malyshev <stas@php.net>
Date:   Sun Sep 11 20:24:13 2016 -0700

    Fix bug #73029 - Missing type check when unserializing SplArray

diff --git a/ext/spl/spl_array.c b/ext/spl/spl_array.c
index 42a8e7a..700d609 100644
--- a/ext/spl/spl_array.c
+++ b/ext/spl/spl_array.c
@@ -308,7 +308,7 @@ static zval **spl_array_get_dimension_ptr_ptr(int check_inherited, zval *object,
 	long index;
 	HashTable *ht = spl_array_get_hash_table(intern, 0 TSRMLS_CC);
 
-	if (!offset) {
+	if (!offset || !ht) {
 		return &EG(uninitialized_zval_ptr);
 	}
 
@@ -1810,7 +1810,9 @@ SPL_METHOD(Array, unserialize)
 		intern->ar_flags |= flags & SPL_ARRAY_CLONE_MASK;
 		zval_ptr_dtor(&intern->array);
 		ALLOC_INIT_ZVAL(intern->array);
-		if (!php_var_unserialize(&intern->array, &p, s + buf_len, &var_hash TSRMLS_CC)) {
+		if (!php_var_unserialize(&intern->array, &p, s + buf_len, &var_hash TSRMLS_CC)
+				|| (Z_TYPE_P(intern->array) != IS_ARRAY && Z_TYPE_P(intern->array) != IS_OBJECT)) {
+			zval_ptr_dtor(&intern->array);
 			goto outexcept;
 		}
 		var_push_dtor(&var_hash, &intern->array);
diff --git a/ext/spl/tests/bug73029.phpt b/ext/spl/tests/bug73029.phpt
new file mode 100644
index 0000000..a379f80
--- /dev/null
+++ b/ext/spl/tests/bug73029.phpt
@@ -0,0 +1,16 @@
+--TEST--
+Bug #73029: Missing type check when unserializing SplArray
+--FILE--
+<?php
+try {
+$a = 'C:11:"ArrayObject":19:0x:i:0;r:2;;m:a:0:{}}';
+$m = unserialize($a);
+$x = $m[2];
+} catch(UnexpectedValueException $e) {
+	print $e->getMessage() . "\n";
+}
+?>
+DONE
+--EXPECTF--
+Error at offset 10 of 19 bytes
+DONE