From 2634622d3dd0a4d41426465712d271be0e115a75 Mon Sep 17 00:00:00 2001
From: Niels Dossche <7771979+nielsdos@users.noreply.github.com>
Date: Sat, 8 Mar 2025 11:12:24 +0100
Subject: [PATCH] Fix uninitialized memory accesses in DOM iterator

---
 ext/dom/dom_iterators.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/ext/dom/dom_iterators.c b/ext/dom/dom_iterators.c
index adc5835f9d8..ff63342595a 100644
--- a/ext/dom/dom_iterators.c
+++ b/ext/dom/dom_iterators.c
@@ -278,15 +278,13 @@ zend_object_iterator *php_dom_get_iterator(zend_class_entry *ce, zval *object, i
 		zend_throw_error(NULL, "An iterator cannot be used with foreach by reference");
 		return NULL;
 	}
-	iterator = emalloc(sizeof(php_dom_iterator));
+	iterator = emalloc(sizeof(*iterator));
+	memset(iterator, 0, sizeof(*iterator));
 	zend_iterator_init(&iterator->intern);
-	iterator->cache_tag.modification_nr = 0;
 
 	ZVAL_OBJ_COPY(&iterator->intern.data, Z_OBJ_P(object));
 	iterator->intern.funcs = &php_dom_iterator_funcs;
 
-	ZVAL_UNDEF(&iterator->curobj);
-
 	intern = Z_DOMOBJ_P(object);
 	objmap = (dom_nnodemap_object *)intern->ptr;
 	if (objmap != NULL) {