SUSE Security Update: Security update for the Linux Kernel (Live Patch 22 for SLE 12 SP1)
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Announcement ID:    SUSE-SU-2017:3338-1
Rating:             important
References:         #1069708 
Cross-References:   CVE-2017-16939
Affected Products:
                    SUSE Linux Enterprise Server for SAP 12-SP1
                    SUSE Linux Enterprise Server 12-SP1-LTSS
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   An update that fixes one vulnerability is now available.

Description:

   This update for the Linux Kernel 3.12.74-60_64_63 fixes one issue.

   The following security issue was 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).


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 for SAP 12-SP1:

      zypper in -t patch SUSE-SLE-SAP-12-SP1-2017-2091=1

   - SUSE Linux Enterprise Server 12-SP1-LTSS:

      zypper in -t patch SUSE-SLE-SERVER-12-SP1-2017-2091=1

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


Package List:

   - SUSE Linux Enterprise Server for SAP 12-SP1 (x86_64):

      kgraft-patch-3_12_74-60_64_63-default-2-2.1
      kgraft-patch-3_12_74-60_64_63-xen-2-2.1

   - SUSE Linux Enterprise Server 12-SP1-LTSS (x86_64):

      kgraft-patch-3_12_74-60_64_63-default-2-2.1
      kgraft-patch-3_12_74-60_64_63-xen-2-2.1


References:

   https://www.suse.com/security/cve/CVE-2017-16939.html
   https://bugzilla.suse.com/1069708