From dd856d5ad90c642d82eaf5fe4ab511c8a3971557 Mon Sep 17 00:00:00 2001
From: Niels Dossche <7771979+nielsdos@users.noreply.github.com>
Date: Thu, 29 May 2025 16:57:31 +0200
Subject: [PATCH] Fix potential NULL deref

Backported from GH-18697.
---
 ext/soap/php_schema.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ext/soap/php_schema.c b/ext/soap/php_schema.c
index 423714545ae..2fc0eacc530 100644
--- a/ext/soap/php_schema.c
+++ b/ext/soap/php_schema.c
@@ -1872,7 +1872,7 @@ static int schema_attribute(sdlPtr sdl, xmlAttrPtr tns, xmlNodePtr attrType, sdl
 		} else {
 			xmlNsPtr nsPtr = attr_find_ns(attr);
 
-			if (strncmp((char*)nsPtr->href, SCHEMA_NAMESPACE, sizeof(SCHEMA_NAMESPACE))) {
+			if (nsPtr && strncmp((char*)nsPtr->href, SCHEMA_NAMESPACE, sizeof(SCHEMA_NAMESPACE))) {
 				smart_str key2 = {0};
 				sdlExtraAttributePtr ext;
 				xmlNsPtr nsptr;