From: Chris Branch <cbranch@cloudflare.com>
Date: Thu, 20 Sep 2018 12:28:53 +0000 (+0100)
Subject: Fix transport message length check
X-Git-Tag: 0.0.20181001~2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7c971d7ef458d47908940396149bf56e6335fb04;p=thirdparty%2Fwireguard-go.git

Fix transport message length check

wireguard-go has a bad length check in its transport message handling.
Although it cannot be exploited because of another length check earlier in the
function, this should be fixed regardless.
---

diff --git a/receive.go b/receive.go
index 01151ca..abe4e57 100644
--- a/receive.go
+++ b/receive.go
@@ -147,7 +147,7 @@ func (device *Device) RoutineReceiveIncoming(IP int, bind Bind) {
 
 			// check size
 
-			if len(packet) < MessageTransportType {
+			if len(packet) < MessageTransportSize {
 				continue
 			}