systemd: CVE-2016-7795

systemd: CVE-2016-7795

The manager_invoke_notify_message function in systemd 231 and earlier allows
local users to cause a denial of service (assertion failure and PID 1 hang)
via a zero-length message received over a notify socket.

The patch is a backport from the latest git repo.

Please see the link below for more information.
https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-7795

(From OE-Core rev: 543570cafa8d7f595b489d03d05f0aa4478f8539)

Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
(cherry picked from commit df3f4785fc69d3ddbd30ccd954aad3d3618c5916)
Signed-off-by: Andreas Oberritter <obi@opendreambox.org>