From 0c3dc33299a90715f55f40846fd26e09178a0445 Mon Sep 17 00:00:00 2001
From: ak88 <anders.holmbjerg@hotmail.com>
Date: Thu, 17 Oct 2024 16:31:53 +0200
Subject: [PATCH] 7702 fix

---
 .../TransactionProcessing/TransactionProcessor.cs             | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Nethermind/Nethermind.Evm/TransactionProcessing/TransactionProcessor.cs b/src/Nethermind/Nethermind.Evm/TransactionProcessing/TransactionProcessor.cs
index c2311e9cd83..8f943fc58d0 100644
--- a/src/Nethermind/Nethermind.Evm/TransactionProcessing/TransactionProcessor.cs
+++ b/src/Nethermind/Nethermind.Evm/TransactionProcessing/TransactionProcessor.cs
@@ -243,7 +243,9 @@ bool IsValidForExecution(
                 ISet<Address> accessedAddresses,
                 [NotNullWhen(false)] out string? error)
             {
-                if (authorizationTuple.Authority is null)
+                UInt256 s = new (authorizationTuple.AuthoritySignature.SAsSpan, isBigEndian: true);
+                if (authorizationTuple.Authority is null
+                    || s > Secp256K1Curve.HalfN)
                 {
                     error = "Bad signature.";
                     return false;