https://salsa.debian.org/pkg-voip-team/linphone-stack/linphone-desktop/-/commit/f25ee3690c5885e0df4936c7423d913310f996d4

Index: linphone-app/src/components/call/CallModel.cpp
--- linphone-app/src/components/call/CallModel.cpp.orig
+++ linphone-app/src/components/call/CallModel.cpp
@@ -963,7 +963,7 @@ void CallModel::searchReceived(std::list<std::shared_p
 	bool found = false;
 	for(auto it = results.begin() ; it != results.end() && !found ; ++it){
 		if((*it)->getFriend()){// Local Friend
-			if((*it)->getFriend()->getAddress()->weakEqual(mRemoteAddress)){
+			if((*it)->getFriend()->getAddress() && (*it)->getFriend()->getAddress()->weakEqual(mRemoteAddress)){
 				setRemoteDisplayName((*it)->getFriend()->getName());
 				found = true;
 			}
