Fix for the empty notify message fuckup

If-the-notification-message-length-is-0-ignore-the-m.patch

@@ -0,0 +1,31 @@
+From 1f74d99193e7d2b0546e641aba25259d9a646e5d Mon Sep 17 00:00:00 2001
+From: Jorge Niedbalski <jorge.niedbalski@canonical.com>
+Date: Wed, 28 Sep 2016 18:25:50 -0300
+Subject: [PATCH] If the notification message length is 0, ignore the message
+ (#4237)
+
+Fixes #4234.
+
+Signed-off-by: Jorge Niedbalski <jnr@metaklass.org>
+---
+ src/core/manager.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/src/core/manager.c b/src/core/manager.c
+index f36cf5e320..6bd32ed920 100644
+--- a/src/core/manager.c
++++ b/src/core/manager.c
+@@ -1557,6 +1557,10 @@ static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t
+ 
+                 return -errno;
+         }
++        if (n == 0) {
++                log_debug("Got zero-length notification message. Ignoring.");
++                return 0;
++        }
+ 
+         CMSG_FOREACH(cmsg, &msghdr) {
+                 if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) {
+-- 
+2.9.0
+

systemd.spec

@@ -12,7 +12,7 @@
 Name:           systemd
 Url:            http://www.freedesktop.org/wiki/Software/systemd
 Version:        229
-Release:        13%{?gitcommit:.git%{gitcommitshort}}%{?dist}
+Release:        14%{?gitcommit:.git%{gitcommitshort}}%{?dist}
 # For a breakdown of the licensing, see README
 License:        LGPLv2+ and MIT and GPLv2+
 Summary:        A System and Service Manager
@@ -80,6 +80,7 @@ Patch0044:      0044-networkd-add-route-expiration-handler-3242.patch
 Patch0045:      0045-coredump-ignore-RLIMIT_CORE.patch
 Patch0046:      0046-networkd-link-fix-handler-typo-for-route_remove-3433.patch
 Patch0047:      0047-macros.systemd.in-add-systemd_ordering-3776.patch
+Patch0048:      If-the-notification-message-length-is-0-ignore-the-m.patch
 
 Patch0999:      0999-resolved-create-etc-resolv.conf-symlink-at-runtime.patch
 
@@ -964,6 +965,9 @@ getent passwd systemd-journal-upload >/dev/null 2>&1 || useradd -r -l -g systemd
 /usr/lib/firewalld/services/*
 
 %changelog
+* Thu Sep 29 2016 Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> - 229-14
+- Denial-of-service bug against pid1 (#1380286)
+
 * Wed Aug 17 2016 Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> - 229-13
 - Add %%systemd_ordering macro