SUSE Security Update: Security update for xen
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Announcement ID:    SUSE-SU-2018:2409-1
Rating:             important
References:         #1027519 #1091107 #1103276 
Cross-References:   CVE-2018-3646
Affected Products:
                    SUSE Linux Enterprise Module for Server Applications 15
                    SUSE Linux Enterprise Module for Basesystem 15
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   An update that solves one vulnerability and has two fixes
   is now available.

Description:

   This update for xen fixes the following security issues:

   - CVE-2018-3646: Systems with microprocessors utilizing speculative
     execution and address translations may have allowed unauthorized
     disclosure of information residing in the L1 data cache to an attacker
     with local user access with guest OS privilege via a terminal page fault
     and a side-channel analysis (bsc#1091107, bsc#1027519).
   - Incorrect MSR_DEBUGCTL handling let guests enable BTS allowing a
     malicious or buggy guest administrator can lock up the entire host
     (bsc#1103276)


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 Module for Server Applications 15:

      zypper in -t patch SUSE-SLE-Module-Server-Applications-15-2018-1663=1

   - SUSE Linux Enterprise Module for Basesystem 15:

      zypper in -t patch SUSE-SLE-Module-Basesystem-15-2018-1663=1



Package List:

   - SUSE Linux Enterprise Module for Server Applications 15 (x86_64):

      xen-4.10.1_08-3.6.1
      xen-debugsource-4.10.1_08-3.6.1
      xen-devel-4.10.1_08-3.6.1
      xen-tools-4.10.1_08-3.6.1
      xen-tools-debuginfo-4.10.1_08-3.6.1

   - SUSE Linux Enterprise Module for Basesystem 15 (x86_64):

      xen-debugsource-4.10.1_08-3.6.1
      xen-libs-4.10.1_08-3.6.1
      xen-libs-debuginfo-4.10.1_08-3.6.1
      xen-tools-domU-4.10.1_08-3.6.1
      xen-tools-domU-debuginfo-4.10.1_08-3.6.1


References:

   https://www.suse.com/security/cve/CVE-2018-3646.html
   https://bugzilla.suse.com/1027519
   https://bugzilla.suse.com/1091107
   https://bugzilla.suse.com/1103276