ews: avoid nullptr deref processing <t:AlternateId>

Fixes: gromox-2.23-10-g9ff3922c7 References: GXH-123
grommunio · Jan 5, 2025 · 76c3920 · 76c3920
1 parent fc6799d
commit 76c3920
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/exch/ews/serialization.cpp b/exch/ews/serialization.cpp
@@ -1472,7 +1472,8 @@ void mConvertIdResponseMessage::serialize(tinyxml2::XMLElement* xml) const
 {
 	mResponseMessageType::serialize(xml);
 	tinyxml2::XMLElement* altid = XMLDUMPM(AlternateId);
-	altid->SetAttribute("xsi:type", "t:AlternateIdType");
+	if (altid != nullptr)
+		altid->SetAttribute("xsi:type", "t:AlternateIdType");
 }
 
 mCopyFolderRequest::mCopyFolderRequest(const tinyxml2::XMLElement* xml) :