SUSE Security Update: Security update for xen
______________________________________________________________________________

Announcement ID:    SUSE-SU-2019:1348-1
Rating:             important
References:         #1027519 #1111331 #1130680 
Cross-References:   CVE-2018-12126 CVE-2018-12127 CVE-2018-12130
                    CVE-2018-20815 CVE-2019-11091
Affected Products:
                    SUSE Linux Enterprise Server 12-LTSS
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   An update that fixes 5 vulnerabilities is now available.

Description:

   This update for xen fixes the following issues:

   Four new speculative execution information leak issues have been
   identified in Intel CPUs. (bsc#1111331)

   - CVE-2018-12126: Microarchitectural Store Buffer Data Sampling (MSBDS)
   - CVE-2018-12127: Microarchitectural Fill Buffer Data Sampling (MFBDS)
   - CVE-2018-12130: Microarchitectural Load Port Data Sampling (MLPDS)
   - CVE-2019-11091: Microarchitectural Data Sampling Uncacheable Memory
     (MDSUM)

   These updates contain the XEN Hypervisor adjustments, that additionally
   also use CPU Microcode updates.

   The mitigation can be controlled via the "mds" commandline option, see the
   documentation.

   For more information on this set of vulnerabilities, check out
   https://www.suse.com/support/kb/

   Other fixes:

   - CVE-2018-20815: Fixed a heap buffer overflow while loading device tree
     blob (bsc#1130680).
   - Added upstream bug fix (bsc#1027519).


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 Server 12-LTSS:

      zypper in -t patch SUSE-SLE-SERVER-12-2019-1348=1



Package List:

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

      xen-4.4.4_40-22.80.1
      xen-debugsource-4.4.4_40-22.80.1
      xen-doc-html-4.4.4_40-22.80.1
      xen-kmp-default-4.4.4_40_k3.12.61_52.149-22.80.1
      xen-kmp-default-debuginfo-4.4.4_40_k3.12.61_52.149-22.80.1
      xen-libs-32bit-4.4.4_40-22.80.1
      xen-libs-4.4.4_40-22.80.1
      xen-libs-debuginfo-32bit-4.4.4_40-22.80.1
      xen-libs-debuginfo-4.4.4_40-22.80.1
      xen-tools-4.4.4_40-22.80.1
      xen-tools-debuginfo-4.4.4_40-22.80.1
      xen-tools-domU-4.4.4_40-22.80.1
      xen-tools-domU-debuginfo-4.4.4_40-22.80.1


References:

   https://www.suse.com/security/cve/CVE-2018-12126.html
   https://www.suse.com/security/cve/CVE-2018-12127.html
   https://www.suse.com/security/cve/CVE-2018-12130.html
   https://www.suse.com/security/cve/CVE-2018-20815.html
   https://www.suse.com/security/cve/CVE-2019-11091.html
   https://bugzilla.suse.com/1027519
   https://bugzilla.suse.com/1111331
   https://bugzilla.suse.com/1130680

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