From: Matt Corallo <git@bluematt.me>
Date: Wed, 12 Sep 2018 17:21:13 +0000 (-0400)
Subject: Correct MAX_BUF_SIZE in serialization
X-Git-Tag: v0.0.12~315^2
X-Git-Url: http://git.bitcoin.ninja/?a=commitdiff_plain;h=refs%2Fheads%2F2018-09-ser-fixes;p=rust-lightning

Correct MAX_BUF_SIZE in serialization

I think this might have been my fault due to faulty review
feedback, but fuzzer caught trivial crash here where you try to
send a ping message larger than 16KB (but smaller than the
max-length 64KB) and you crash as message serialization is unwrap()
---

diff --git a/src/util/ser.rs b/src/util/ser.rs
index 1944519d0..299515d90 100644
--- a/src/util/ser.rs
+++ b/src/util/ser.rs
@@ -13,7 +13,7 @@ use ln::msgs::DecodeError;
 
 use util::byte_utils::{be64_to_array, be32_to_array, be16_to_array, slice_to_be16, slice_to_be32, slice_to_be64};
 
-const MAX_BUF_SIZE: usize = 16 * 1024;
+const MAX_BUF_SIZE: usize = 64 * 1024;
 
 pub struct Writer<W> { writer: W }
 pub struct Reader<R> { reader: R }