From 781502311718c98e34dc09d85e75e9b56a29c574 Mon Sep 17 00:00:00 2001
From: jeffro256 <jeffro256@tutanota.com>
Date: Thu, 7 Mar 2024 09:23:41 -0600
Subject: 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(+)

(limited to 'src/cryptonote_core/tx_pool.cpp')

diff --git a/src/cryptonote_core/tx_pool.cpp b/src/cryptonote_core/tx_pool.cpp
index d86a9f5f9..cd6b4bec5 100644
--- a/src/cryptonote_core/tx_pool.cpp
+++ b/src/cryptonote_core/tx_pool.cpp
@@ -246,6 +246,7 @@ 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;
       }
     }
-- 
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