[6.2] d67a60e56 Create changelog for 6.2.3

[Martin Blix Grydeland]

commit d67a60e56a29747f1e5d34e97c903d052376ec17
Author: Martin Blix Grydeland <martin at varnish-software.com>
Date:   Fri Jan 31 13:12:46 2020 +0100

    Create changelog for 6.2.3

diff --git a/doc/changes.rst b/doc/changes.rst
index d421bed9b..70183dd35 100644
--- a/doc/changes.rst
+++ b/doc/changes.rst
@@ -24,6 +24,18 @@ http://varnish-cache.org/docs/trunk/whats-new/index.html and via
 individual releases. These documents are updated as part of the
 release process.
 
+================================
+Varnish Cache 6.2.3 (2020-02-04)
+================================
+
+Bugs fixed
+----------
+
+* Fix a denial of service vulnerability when using the proxy protocol
+  version 2. (VSV00005_)
+
+.. _VSV00005: https://varnish-cache.org/security/VSV00005.html
+
 ================================
 Varnish Cache 6.2.2 (2019-10-21)
 ================================