From cdcc3b323d85e53daea9ca66e74fb5192d32d992 Mon Sep 17 00:00:00 2001
From: nethoxa <135072738+nethoxa@users.noreply.github.com>
Date: Wed, 28 May 2025 11:33:34 +0200
Subject: [PATCH] core: add overflow checks to IntrinsicGas

---
 core/state_transition.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/core/state_transition.go b/core/state_transition.go
index 4f172682d0..0f218a242e 100644
--- a/core/state_transition.go
+++ b/core/state_transition.go
@@ -107,10 +107,20 @@ func IntrinsicGas(data []byte, accessList types.AccessList, authList []types.Set
 		}
 	}
 	if accessList != nil {
+		if (math.MaxUint64-gas)/params.TxAccessListAddressGas < uint64(len(accessList)) {
+			return 0, ErrGasUintOverflow
+		}
 		gas += uint64(len(accessList)) * params.TxAccessListAddressGas
+
+		if (math.MaxUint64-gas)/params.TxAccessListStorageKeyGas < uint64(accessList.StorageKeys()) {
+			return 0, ErrGasUintOverflow
+		}
 		gas += uint64(accessList.StorageKeys()) * params.TxAccessListStorageKeyGas
 	}
 	if authList != nil {
+		if (math.MaxUint64-gas)/params.CallNewAccountGas < uint64(len(authList)) {
+			return 0, ErrGasUintOverflow
+		}
 		gas += uint64(len(authList)) * params.CallNewAccountGas
 	}
 	return gas, nil