(RHSA-2016:2962) Important: kernel security and bug fix update

The kernel packages contain the Linux kernel, the core of any Linux operating
system.

Security Fix(es):

• A use-after-free vulnerability was found in the kernels socket recvmmsg
  subsystem. This may allows remote attackers to corrupt memory and may allow
  execution of arbitrary code. This corruption takes place during the error
  handling routines within __sys_recvmmsg() function. (CVE-2016-7117, Important)

Bug Fix(es):

• Previously, guest virtual machines (VMs) on a Hyper-V server cluster got in
  some cases rebooted during the graceful node failover test, because the host
  kept sending heartbeat packets independently of guests responding to them. This
  update fixes the bug by properly responding to all the heartbeat messages in the
  queue, even if they are pending. As a result, guest VMs no longer get rebooted
  under the described circumstances. (BZ#1391167)