From c8804a16bb390a1532525b385d06db3cab43ba09 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=A1=D0=B5=D1=80=D0=B3=D0=B5=D0=B9=20=D0=9F=D1=80=D0=BE?=
 =?UTF-8?q?=D1=85=D0=BE=D1=80=D0=BE=D0=B2?= <seriy.pr@gmail.com>
Date: Mon, 20 May 2019 20:49:31 +0200
Subject: [PATCH] Make sure stored "session fingerprint" is not referring
 larger binary

---
 src/mtp_session_storage.erl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mtp_session_storage.erl b/src/mtp_session_storage.erl
index 7f9122f..577d3a0 100644
--- a/src/mtp_session_storage.erl
+++ b/src/mtp_session_storage.erl
@@ -128,7 +128,7 @@ code_change(_OldVsn, State, _Extra) ->
 fingerprint(<<_:8/binary, KeyIV:(32 + 16)/binary, _:8/binary>>) ->
     %% It would be better to use whole 64b packet as fingerprint, but will use only
     %% 48b Key + IV part to save some space.
-    KeyIV.
+    binary:copy(KeyIV).
 
 bucket(Timestamp) ->
     Timestamp div ?HISTOGRAM_BUCKET_SIZE.