From f90c8cda61531a3974593a339fd19c1b80538935 Mon Sep 17 00:00:00 2001
From: "seer-by-sentry[bot]"
 <157164994+seer-by-sentry[bot]@users.noreply.github.com>
Date: Wed, 1 Apr 2026 11:32:47 +0000
Subject: [PATCH] bugfix(lobby): Fix potential use-after-free when HTTP
 response arrives after interface destruction

---
 .../GeneralsOnline/OnlineServices_LobbyInterface.cpp          | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/GeneralsMD/Code/GameEngine/Source/GameNetwork/GeneralsOnline/OnlineServices_LobbyInterface.cpp b/GeneralsMD/Code/GameEngine/Source/GameNetwork/GeneralsOnline/OnlineServices_LobbyInterface.cpp
index faa825d863..4fc6398a35 100644
--- a/GeneralsMD/Code/GameEngine/Source/GameNetwork/GeneralsOnline/OnlineServices_LobbyInterface.cpp
+++ b/GeneralsMD/Code/GameEngine/Source/GameNetwork/GeneralsOnline/OnlineServices_LobbyInterface.cpp
@@ -772,6 +772,10 @@ void NGMP_OnlineServices_LobbyInterface::UpdateRoomDataCache(std::function<void(
 
 		NGMP_OnlineServicesManager::GetInstance()->GetHTTPManager()->SendGETRequest(strURI.c_str(), EIPProtocolVersion::DONT_CARE, mapHeaders, [=](bool bSuccess, int statusCode, std::string strBody, HTTPRequest* pReq)
 		{
+			// safety, lobby interface could've been destroyed by the time we get our response (use-after-free guard)
+			if (NGMP_OnlineServicesManager::GetInterface<NGMP_OnlineServices_LobbyInterface>() == nullptr)
+				return;
+
 			// safety, lobby could've been torn down by the time we get our response
 				if (m_CurrentLobby.lobbyID != -1 && TheNGMPGame != nullptr)
 				{