From 28231840772280f75949069d29df52ece00abcea Mon Sep 17 00:00:00 2001
From: Michael Zillgith <michael.zillgith@mz-automation.de>
Date: Fri, 2 Feb 2024 06:44:47 +0000
Subject: [PATCH] - fixed - null pointer dereference in
 mmsServer_handleDeleteNamedVariableListRequest when receiving malformed
 message (LIB61850-430)

---
 src/mms/iso_mms/server/mms_named_variable_list_service.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/mms/iso_mms/server/mms_named_variable_list_service.c b/src/mms/iso_mms/server/mms_named_variable_list_service.c
index 3a27061c4..3365f7712 100644
--- a/src/mms/iso_mms/server/mms_named_variable_list_service.c
+++ b/src/mms/iso_mms/server/mms_named_variable_list_service.c
@@ -140,6 +140,12 @@ mmsServer_handleDeleteNamedVariableListRequest(MmsServerConnection connection,
         mmsMsg_createMmsRejectPdu(&invokeId, MMS_ERROR_REJECT_INVALID_PDU, response);
         goto exit_function;
     }
+
+    if (request->listOfVariableListName == NULL)
+    {
+        mmsMsg_createMmsRejectPdu(&invokeId, MMS_ERROR_REJECT_INVALID_PDU, response);
+        goto exit_function;
+    }
  
 	long scopeOfDelete = DeleteNamedVariableListRequest__scopeOfDelete_specific;