From 7ef0ae12a16eaa23cc242f20b89fd2c44551ff1b Mon Sep 17 00:00:00 2001
From: Jack Robison <jackrobison@lbry.io>
Date: Fri, 30 Jul 2021 14:41:01 -0400
Subject: [PATCH] handle invalid claim update

---
 lbry/wallet/server/block_processor.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lbry/wallet/server/block_processor.py b/lbry/wallet/server/block_processor.py
index e22b3486f..4eb99fb8f 100644
--- a/lbry/wallet/server/block_processor.py
+++ b/lbry/wallet/server/block_processor.py
@@ -478,6 +478,11 @@ class BlockProcessor:
             if claim_hash not in spent_claims:
                 # print(f"\tthis is a wonky tx, contains unlinked claim update {claim_hash.hex()}")
                 return
+            if claim_name != spent_claims[claim_hash][2]:
+                self.logger.warning(
+                    f"{tx_hash[::-1].hex()} contains mismatched name for claim update {claim_hash.hex()}"
+                )
+                return
             (prev_tx_num, prev_idx, _) = spent_claims.pop(claim_hash)
             # print(f"\tupdate {claim_hash.hex()} {tx_hash[::-1].hex()} {txo.amount}")
             if (prev_tx_num, prev_idx) in self.txo_to_claim: