From e4276f2983cea8f459f1e572ff12e848a58252cb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?L=C3=A9o=20Lam?= <leo@innovatetechnologi.es>
Date: Thu, 19 Apr 2018 00:38:04 +0200
Subject: [PATCH] IOS/SO: Handle invalid GetInterfaceOpt requests

---
 Source/Core/Core/IOS/Network/IP/Top.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Source/Core/Core/IOS/Network/IP/Top.cpp b/Source/Core/Core/IOS/Network/IP/Top.cpp
index a53d6d5baa..037cd95589 100644
--- a/Source/Core/Core/IOS/Network/IP/Top.cpp
+++ b/Source/Core/Core/IOS/Network/IP/Top.cpp
@@ -719,6 +719,12 @@ IPCCommandResult NetIPTop::HandleGetInterfaceOptRequest(const IOCtlVRequest& req
   const u32 param4 = Memory::Read_U32(request.io_vectors[1].address);
   u32 param5 = 0;
 
+  if (param != 0xfffe)
+  {
+    WARN_LOG(IOS_NET, "GetInterfaceOpt: received invalid request with param0=%08x", param);
+    return GetDefaultReply(-51);
+  }
+
   if (request.io_vectors[0].size >= 8)
   {
     param5 = Memory::Read_U32(request.io_vectors[0].address + 4);