fix: refuse to create new clsig if chain tip has changed while we wer…

…e signing
UdjinM6 · Dec 20, 2024 · d141f1f · d141f1f
1 parent dd96032
commit d141f1f
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/src/llmq/chainlocks.cpp b/src/llmq/chainlocks.cpp
@@ -519,7 +519,10 @@ MessageProcessingResult CChainLocksHandler::HandleNewRecoveredSig(const llmq::CR
             // already got the same or a better CLSIG through the CLSIG message
             return {};
         }
-
+        if (m_chainstate.m_chain.Tip()->GetBlockHash() != lastSignedMsgHash) {
+            // chain tip has changed while we were signing
+            return {};
+        }
 
         clsig = CChainLockSig(lastSignedHeight, lastSignedMsgHash, recoveredSig.sig.Get());
     }