From eeb7c7c5467dae9c72e4dde11cbd51dab3b448f9 Mon Sep 17 00:00:00 2001
From: jeffro256 <jeffro256@tutanota.com>
Date: Thu, 7 Mar 2024 09:23:41 -0600
Subject: [PATCH] tx_memory_pool: make double spends a no-drop offense

Nodes who see different txs in a double spend attack will drop each other, splitting the network.
Issue found by @boog900.
---
 src/cryptonote_core/tx_pool.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/cryptonote_core/tx_pool.cpp b/src/cryptonote_core/tx_pool.cpp
index 36fea56a3..5f058b83d 100644
--- a/src/cryptonote_core/tx_pool.cpp
+++ b/src/cryptonote_core/tx_pool.cpp
@@ -247,6 +247,7 @@ namespace cryptonote
         LOG_PRINT_L1("Transaction with id= "<< id << " used already spent key images");
         tvc.m_verifivation_failed = true;
         tvc.m_double_spend = true;
+        tvc.m_no_drop_offense = true;
         return false;
       }
     }