From a22bb0600e65433e9c788e76439bd0faf0f5da79 Mon Sep 17 00:00:00 2001
From: Johnathan <39648915+TrebledJ@users.noreply.github.com>
Date: Fri, 8 Aug 2025 09:10:44 +0800
Subject: [PATCH] fix CVE-2023-34399

---
 src/basic_iarchive.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/basic_iarchive.cpp b/src/basic_iarchive.cpp
index f427109b3..5f9bf28e9 100644
--- a/src/basic_iarchive.cpp
+++ b/src/basic_iarchive.cpp
@@ -427,7 +427,7 @@ basic_iarchive_impl::load_pointer(
     class_id_type cid;
     load(ar, cid);
 
-    if(BOOST_SERIALIZATION_NULL_POINTER_TAG == cid){
+    if(/* BOOST_SERIALIZATION_NULL_POINTER_TAG */ cid < 0){
         t = NULL;
         return bpis_ptr;
     }