From d20e0738bfa739d8645ff908aa01da50f296d91d Mon Sep 17 00:00:00 2001
From: Fred Gleason <fredg@paravelsystems.com>
Date: Tue, 21 Jan 2025 14:25:33 -0500
Subject: [PATCH] 2025-01-21 Fred Gleason <fredg@paravelsystems.com> 	*
 Added code to the 'RDPam' processor to detection null contexts.

Signed-off-by: Fred Gleason <fredg@paravelsystems.com>
---
 ChangeLog     | 2 ++
 lib/rdpam.cpp | 4 ++++
 2 files changed, 6 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index 7e2b9c55..19e96448 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -24702,3 +24702,5 @@
 2024-04-06 Fred Gleason <fredg@paravelsystems.com>
 	* Incremented the package version to 4.2.0
 	* Incremented the Python API version to 4.2.0.
+2025-01-21 Fred Gleason <fredg@paravelsystems.com>
+	* Added code to the 'RDPam' processor to detection null contexts.
diff --git a/lib/rdpam.cpp b/lib/rdpam.cpp
index 3a23eeae..613ad29d 100644
--- a/lib/rdpam.cpp
+++ b/lib/rdpam.cpp
@@ -40,6 +40,10 @@ int RDPamCallback(int num_msg, const struct pam_message **msg,
   pam->CleanupPam();
   *resp=new struct pam_response[num_msg];
   for(int i=0;i<num_msg;i++) {
+    if(resp[i]==NULL) {
+      rda->syslog(LOG_WARNING,"PAM callback supplied NULL context, ignoring");
+      break;
+    }
     resp[i]->resp=new char[256];
     memset(resp[i]->resp,0,256);
     switch(msg[i]->msg_style) {