Security update for systemd (important)

This update for systemd fixes the following issues:

Security issues fixed:

• CVE-2018-15688: A buffer overflow vulnerability in the dhcp6 client of
  systemd allowed a malicious dhcp6 server to overwrite heap memory in
  systemd-networkd. (bsc#1113632)
• CVE-2018-15686: A vulnerability in unit_deserialize of systemd allows an
  attacker to supply arbitrary state across systemd re-execution via
  NotifyAccess. This can be used to improperly influence systemd execution
  and possibly lead to root privilege escalation. (bsc#1113665)

Non security issues fixed:

• dhcp6: split assert_return() to be more debuggable when hit
• core: skip unit deserialization and move to the next one when
  unit_deserialize() fails
• core: properly handle deserialization of unknown unit types (#6476)
• core: don’t create Requires for workdir if "missing ok" (bsc#1113083)
• logind: use manager_get_user_by_pid() where appropriate
• logind: rework manager_get_{user|session}_by_pid() a bit
• login: fix [email protected] case, so we don’t allow nested sessions (#8051)
  (bsc#1112024)
• core: be more defensive if we can’t determine per-connection socket peer
  (#7329)
• core: introduce systemd.early_core_pattern= kernel cmdline option
• core: add missing ‘continue’ statement
• core/mount: fstype may be NULL
• journald: don’t ship systemd-journald-audit.socket (bsc#1109252)
• core: make "tmpfs" dependencies on swapfs a "default" dep, not an
  "implicit" (bsc#1110445)
• mount: make sure we unmount tmpfs mounts before we deactivate swaps
  (#7076)
• detect-virt: do not try to read all of /proc/cpuinfo (bsc#1109197)
• emergency: make sure console password agents don’t interfere with the
  emergency shell
• man: document that ‘nofail’ also has an effect on ordering
• journald: take leading spaces into account in syslog_parse_identifier
• journal: do not remove multiple spaces after identifier in syslog message
• syslog: fix segfault in syslog_parse_priority()
• journal: fix syslog_parse_identifier()
• install: drop left-over debug message (#6913)
• Ship systemd-sysv-install helper via the main package This script was
  part of systemd-sysvinit sub-package but it was wrong since
  systemd-sysv-install is a script used to redirect enable/disable
  operations to chkconfig when the unit targets are sysv init scripts.
  Therefore it’s never been a SySV init tool.
• Add udev.no-partlabel-links kernel command-line option. This option can
  be used to disable the generation of the by-partlabel symlinks
  regardless of the name used. (bsc#1089761)
• man: SystemMaxUse= clarification in journald.conf(5). (bsc#1101040)
• systemctl: load unit if needed in "systemctl is-active" (bsc#1102908)
• core: don’t freeze OnCalendar= timer units when the clock goes back a
  lot (bsc#1090944)
• Enable or disable machines.target according to the presets (bsc#1107941)
• cryptsetup: add support for sector-size= option (fate#325697)
• nspawn: always use permission mode 555 for /sys (bsc#1107640)
• Bugfix for a race condition between daemon-reload and other commands
  (bsc#1105031)
• Fixes an issue where login with root credentials was not possible in
  init level 5 (bsc#1091677)
• Fix an issue where services of type "notify" harmless DENIED log
  entries. (bsc#991901)
• Does no longer adjust qgroups on existing subvolumes (bsc#1093753)
• cryptsetup: add support for sector-size= option (#9936) (fate#325697
  bsc#1114135)

This update was imported from the SUSE:SLE-15:Update update project.