From d8aac24223c92d50bd69579a72517f6ad15ab176 Mon Sep 17 00:00:00 2001
From: Daniel Liu <139250065@qq.com>
Date: Thu, 11 Dec 2025 18:48:18 +0800
Subject: [PATCH] core/txpool: check if initcode size is exceeded #26504
 (#1842)

---
 core/txpool/txpool.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/core/txpool/txpool.go b/core/txpool/txpool.go
index 02f8ac0b16..70b7ea50e4 100644
--- a/core/txpool/txpool.go
+++ b/core/txpool/txpool.go
@@ -626,6 +626,10 @@ func (pool *TxPool) validateTx(tx *types.Transaction, local bool) error {
 	if tx.Size() > txMaxSize {
 		return ErrOversizedData
 	}
+	// Check whether the init code size has been exceeded.
+	if pool.eip1559 && tx.To() == nil && len(tx.Data()) > params.MaxInitCodeSize {
+		return fmt.Errorf("%w: code size %v limit %v", core.ErrMaxInitCodeSizeExceeded, len(tx.Data()), params.MaxInitCodeSize)
+	}
 	// Get current block number
 	var number *big.Int = nil
 	if pool.chain.CurrentHeader() != nil {