From e13d14e6a31dd83fa9b65dfea55374fa6085556f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= <peterke@gmail.com>
Date: Tue, 6 Jul 2021 23:02:38 +0300
Subject: [PATCH] core/types: sanity check the basefee length inside a header
(#23171)
---
core/types/block.go | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/core/types/block.go b/core/types/block.go
index d189c86c2..360f1eb47 100644
--- a/core/types/block.go
+++ b/core/types/block.go
@@ -129,6 +129,11 @@ func (h *Header) SanityCheck() error {
if eLen := len(h.Extra); eLen > 100*1024 {
return fmt.Errorf("too large block extradata: size %d", eLen)
}
+ if h.BaseFee != nil {
+ if bfLen := h.BaseFee.BitLen(); bfLen > 256 {
+ return fmt.Errorf("too large base fee: bitlen %d", bfLen)
+ }
+ }
return nil
}
--
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