Security update for the Linux Kernel (Live Patch 30 for SLE 12) (important)

This update for the Linux Kernel 3.12.61-52_111 fixes one issue.

The following security issue was fixed:

• CVE-2017-15649: net/packet/af_packet.c in the Linux kernel allowed local
  users to gain privileges via crafted system calls that trigger
  mishandling of packet_fanout data structures, because of a race
  condition (involving fanout_add and packet_do_bind) that leads to a
  use-after-free. This fixes the earlier kgraft update, that could have
  caused crashes when trying to exploit this vulnerability after applying
  the kgraft update (bsc#1064392, bsc#1064388).