dplayx: Check the message size before access.

ritalat · Sep 20, 2024 · da5d8ff · da5d8ff
1 parent e029eb6
commit da5d8ff
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/dlls/dplayx/dplaysp.c b/dlls/dplayx/dplaysp.c
@@ -219,6 +219,9 @@ static HRESULT WINAPI IDirectPlaySPImpl_HandleMessage( IDirectPlaySP *iface, voi
   FIXME( "(%p)->(%p,0x%08lx,%p): mostly stub\n",
          This, lpMessageBody, dwMessageBodySize, lpMessageHeader );
 
+  if ( dwMessageBodySize < sizeof( DPMSG_SENDENVELOPE ) )
+    return DPERR_GENERIC;
+
   wCommandId = lpMsg->wCommandId;
   wVersion   = lpMsg->wVersion;