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Merge branch 'PHP-8.3'

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* PHP-8.3:
  Fix crashes with entity references and predefined entities
  Fix crash in adoptNode with attribute references
This commit is contained in:
Niels Dossche 2023-12-23 17:01:28 +01:00
commit f420ea84aa
5 changed files with 127 additions and 19 deletions
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17
ext/libxml/libxml.c
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@ -207,12 +207,10 @@ static void php_libxml_node_free(xmlNodePtr node)
* dtd is attached to the document. This works around the issue by inspecting the parent directly. */
case XML_ENTITY_DECL: {
xmlEntityPtr entity = (xmlEntityPtr) node;
php_libxml_unlink_entity_decl(entity);
if (entity->orig != NULL) {
xmlFree((char *) entity->orig);
entity->orig = NULL;
if (entity->etype != XML_INTERNAL_PREDEFINED_ENTITY) {
php_libxml_unlink_entity_decl(entity);
xmlFreeEntity(entity);
}
xmlFreeNode(node);
break;
}
case XML_NOTATION_NODE: {
@ -1383,6 +1381,15 @@ PHP_LIBXML_API void php_libxml_node_free_resource(xmlNodePtr node)
case XML_DOCUMENT_NODE:
case XML_HTML_DOCUMENT_NODE:
break;
case XML_ENTITY_REF_NODE:
/* Entity reference nodes are special: their children point to entity declarations,
* but they don't own the declarations and therefore shouldn't free the children.
* Moreover, there can be N>1 reference nodes for a single entity declarations. */
php_libxml_unregister_node(node);
if (node->parent == NULL) {
php_libxml_node_free(node);
}
break;
default:
if (node->parent == NULL || node->type == XML_NAMESPACE_DECL) {
php_libxml_node_free_list((xmlNodePtr) node->children);