From 182fb83d98aa9397e9130c25a0cf4f84e869385c Mon Sep 17 00:00:00 2001
From: Shelikhoo <xiaokangwang@outlook.com>
Date: Tue, 4 Feb 2025 11:19:44 +0000
Subject: [PATCH] reject message with 2047 bytes to reserve higher bits

---
 common/packetpadding/container.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/common/packetpadding/container.go b/common/packetpadding/container.go
index c2a5bb3..318ba2e 100644
--- a/common/packetpadding/container.go
+++ b/common/packetpadding/container.go
@@ -40,6 +40,9 @@ func (c packetPaddingContainer) Unpack(wrappedData_OWNERSHIP_RELINQUISHED []byte
 	}
 
 	dataLen := int(binary.BigEndian.Uint16(wrappedData_OWNERSHIP_RELINQUISHED[dataLength-2:]))
+	if dataLen > 2047 {
+		return nil, 0
+	}
 	paddingLength := dataLength - dataLen - 2
 	if paddingLength < 0 {
 		return nil, paddingLength