SUSE Security Update: Security update for xen
______________________________________________________________________________

Announcement ID:    SUSE-SU-2020:1609-1
Rating:             important
References:         #1027519 #1157490 #1167007 #1172205 
Cross-References:   CVE-2020-0543
Affected Products:
                    SUSE Linux Enterprise Module for Server Applications 15-SP1
                    SUSE Linux Enterprise Module for Basesystem 15-SP1
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   An update that solves one vulnerability and has three fixes
   is now available.

Description:

   This update for xen to version 4.12.3 fixes the following issues:

   - CVE-2020-0543: Fixed a side channel attack against special registers
     which could have resulted in leaking of read values to cores other than
     the one which called it. This attack is known as Special Register Buffer
     Data Sampling (SRBDS) or "CrossTalk" (bsc#1172205).
   - Added support for new 64bit libxl memory API (bsc#1167007 and
     bsc#1157490).


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-SP1:

      zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP1-2020-1609=1

   - SUSE Linux Enterprise Module for Basesystem 15-SP1:

      zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP1-2020-1609=1



Package List:

   - SUSE Linux Enterprise Module for Server Applications 15-SP1 (x86_64):

      xen-4.12.3_02-3.18.1
      xen-debugsource-4.12.3_02-3.18.1
      xen-devel-4.12.3_02-3.18.1
      xen-tools-4.12.3_02-3.18.1
      xen-tools-debuginfo-4.12.3_02-3.18.1

   - SUSE Linux Enterprise Module for Basesystem 15-SP1 (x86_64):

      xen-debugsource-4.12.3_02-3.18.1
      xen-libs-4.12.3_02-3.18.1
      xen-libs-debuginfo-4.12.3_02-3.18.1
      xen-tools-domU-4.12.3_02-3.18.1
      xen-tools-domU-debuginfo-4.12.3_02-3.18.1


References:

   https://www.suse.com/security/cve/CVE-2020-0543.html
   https://bugzilla.suse.com/1027519
   https://bugzilla.suse.com/1157490
   https://bugzilla.suse.com/1167007
   https://bugzilla.suse.com/1172205

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