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Fix GH-18640: heap-use-after-free ext/soap/php_encoding.c:299:32 in soap_check_zval_ref #19181

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Fix GH-18640: heap-use-after-free ext/soap/php_encoding.c:299:32 in soap_check_zval_ref #19181

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Fix GH-18640: heap-use-after-free ext/soap/php_encoding.c:299:32 in s…
nielsdos Jul 19, 2025
f5d5f96
[ci skip] comments
nielsdos Jul 20, 2025
ae42fb1
Update ext/soap/php_encoding.c
nielsdos Jul 20, 2025
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2 changes: 2 additions & 0 deletions ext/soap/php_encoding.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1936,6 +1936,7 @@ static xmlNodePtr to_xml_object(encodeTypePtr type, zval *data, int style, xmlNo
sdlAttributePtr attr;
zval *zattr, rv;

/* Attributes can't refer to other attributes as there's nothing to attach the href to. */
HashTable **ref_map = &SOAP_GLOBAL(ref_map);
HashTable *old_ref_map = *ref_map;
*ref_map = NULL;
Expand Down Expand Up @@ -3041,6 +3042,7 @@ static xmlNodePtr to_xml_list(encodeTypePtr enc, zval *data, int style, xmlNodeP
xmlAddChild(parent, ret);
FIND_ZVAL_NULL(data, ret, style);

/* Literals are uniqued and can't refer to other references via attributes. */
HashTable **ref_map = &SOAP_GLOBAL(ref_map);
HashTable *old_ref_map = *ref_map;
*ref_map = NULL;
Expand Down