From: Dmitry Stogov <dmitry@zend.com>
Date: Sat, 20 Feb 2021 08:20:29 +0000 (+0300)
Subject: Fixed NULL pointer dereference
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=59590663d786f52254a55ffa985fe2fb9b76bbf6;p=php

Fixed NULL pointer dereference
---

diff --git a/Zend/zend_closures.c b/Zend/zend_closures.c
index 38105a67f6..2eda4f8f5c 100644
--- a/Zend/zend_closures.c
+++ b/Zend/zend_closures.c
@@ -620,7 +620,8 @@ static HashTable *zend_closure_get_gc(zend_object *obj, zval **table, int *n) /*
 
 	*table = Z_TYPE(closure->this_ptr) != IS_NULL ? &closure->this_ptr : NULL;
 	*n = Z_TYPE(closure->this_ptr) != IS_NULL ? 1 : 0;
-	return (closure->func.type == ZEND_USER_FUNCTION) ?
+	return (closure->func.type == ZEND_USER_FUNCTION &&
+		closure->func.op_array.static_variables) ?
 		ZEND_MAP_PTR_GET(closure->func.op_array.static_variables_ptr) : NULL;
 }
 /* }}} */