From 158f7ee8919929b4daefb484d1a232d367d0c8e5 Mon Sep 17 00:00:00 2001
From: Mark Haines <mark.haines@matrix.org>
Date: Fri, 7 Aug 2015 19:33:48 +0100
Subject: Fix crash where the message length was shorter than the length of the
 mac

---
 src/message.cpp | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src')

diff --git a/src/message.cpp b/src/message.cpp
index ffb9f6c..f98dfe5 100644
--- a/src/message.cpp
+++ b/src/message.cpp
@@ -213,6 +213,7 @@ void olm::decode_message(
     reader.ciphertext_length = 0;
 
     if (pos == end) return;
+    if (input_length < mac_length) return;
     reader.version = *(pos++);
 
     while (pos != end) {
-- 
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