From: Matt Corallo <git@bluematt.me>
Date: Wed, 27 Jun 2018 20:59:21 +0000 (-0400)
Subject: Fix Pong response attempt-to-encode-oversize-msg panic
X-Git-Tag: v0.0.12~402^2
X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=commitdiff_plain;h=deedc69a64984c46d91c2016d551a11b53aa1e41;p=rust-lightning

Fix Pong response attempt-to-encode-oversize-msg panic
---

diff --git a/src/ln/peer_handler.rs b/src/ln/peer_handler.rs
index aec3a32e9..86e255362 100644
--- a/src/ln/peer_handler.rs
+++ b/src/ln/peer_handler.rs
@@ -409,8 +409,10 @@ impl<Descriptor: SocketDescriptor> PeerManager<Descriptor> {
 
 											18 => {
 												let msg = try_potential_decodeerror!(msgs::Ping::decode(&msg_data[2..]));
-												let resp = msgs::Pong { byteslen: msg.ponglen };
-												encode_and_send_msg!(resp, 19);
+												if msg.ponglen < 65532 {
+													let resp = msgs::Pong { byteslen: msg.ponglen };
+													encode_and_send_msg!(resp, 19);
+												}
 											},
 											19 => {
 												try_potential_decodeerror!(msgs::Pong::decode(&msg_data[2..]));