Security update for the Linux Kernel (Live Patch 28 for SLE 12)

SUSE Security Update: Security update for the Linux Kernel (Live Patch 28 for SLE 12)
Announcement ID: SUSE-SU-2017:3307-1
Rating: important
References: #1064388 #1064392 #1069708
Affected Products:
  • SUSE Linux Enterprise Server 12-LTSS

  • An update that solves two vulnerabilities and has one errata is now available.

    Description:

    This update for the Linux Kernel 3.12.61-52_101 fixes several issues.

    The following security issues were fixed:

    - CVE-2017-16939: The XFRM dump policy implementation in
    net/xfrm/xfrm_user.c allowed local users to gain privileges or cause a
    denial of service (use-after-free) via a crafted SO_RCVBUF setsockopt
    system call in conjunction with XFRM_MSG_GETPOLICY Netlink messages
    (bsc#1069708).
    - CVE-2017-15649: net/packet/af_packet.c 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
    (bsc#1064392).

    Patch Instructions:

    To install this SUSE Security Update use YaST online_update.
    Alternatively you can run the command listed for your product:

    • SUSE Linux Enterprise Server 12-LTSS:
      zypper in -t patch SUSE-SLE-SERVER-12-2017-2061=1

    To bring your system up-to-date, use "zypper patch".

    Package List:

    • SUSE Linux Enterprise Server 12-LTSS (x86_64):
      • kgraft-patch-3_12_61-52_101-default-2-2.1
      • kgraft-patch-3_12_61-52_101-xen-2-2.1

    References: