SUSE-SU-2018:2394-1: important: Security update for kgraft

[sle-updates at lists.suse.com]

   SUSE Security Update: Security update for kgraft
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Announcement ID:    SUSE-SU-2018:2394-1
Rating:             important
References:         #1099306 
Cross-References:   CVE-2018-3646
Affected Products:
                    SUSE Linux Enterprise Live Patching 12-SP3
                    SUSE Linux Enterprise Live Patching 12
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   An update that fixes one vulnerability is now available.

Description:

   This update for kgraft fixes the following issues:

   Add script for disabling SMT to help with the mitigation of the "L1
   Terminal Fault" issue (CVE-2018-3646 bsc#1099306)

   The script is called "klp-kvm-l1tf-ctrl-smt" and is used for enabling or
   disabling SMT to mitigate the issue when this administrative decision is
   taken.

   Disabling SMT:

   	klp-kvm-l1tf-ctrl-smt -d

   Enabling SMT:

   	klp-kvm-l1tf-ctrl-smt -e


Patch Instructions:

   To install this SUSE Security Update use the SUSE recommended installation methods
   like YaST online_update or "zypper patch".

   Alternatively you can run the command listed for your product:

   - SUSE Linux Enterprise Live Patching 12-SP3:

      zypper in -t patch SUSE-SLE-Live-Patching-12-SP3-2018-1637=1

   - SUSE Linux Enterprise Live Patching 12:

      zypper in -t patch SUSE-SLE-Live-Patching-12-2018-1637=1



Package List:

   - SUSE Linux Enterprise Live Patching 12-SP3 (ppc64le x86_64):

      kgraft-1.0-23.9.1

   - SUSE Linux Enterprise Live Patching 12 (ppc64le s390x x86_64):

      kgraft-1.0-23.9.1

   - SUSE Linux Enterprise Live Patching 12 (x86_64):

      kgraft-devel-1.0-23.9.1


References:

   https://www.suse.com/security/cve/CVE-2018-3646.html
   https://bugzilla.suse.com/1099306