SUSE Security Update: Security update for xen
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Announcement ID:    SUSE-SU-2018:1981-1
Rating:             important
References:         #1027519 #1079730 #1087289 #1095242 #1097521 
                    #1097522 #1097523 #1098403 
Cross-References:   CVE-2018-12891 CVE-2018-12892 CVE-2018-12893
                    CVE-2018-3665
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 four vulnerabilities and has four
   fixes is now available.

Description:

   This update for xen fixes the following issues:

   Security issues fixed:

   - CVE-2018-3665: Fix Lazy FP Save/Restore issue (XSA-267) (bsc#1095242).
   - CVE-2018-12891: Fix possible Denial of Service (DoS) via certain PV MMU
     operations that affect the entire host (XSA-264) (bsc#1097521).
   - CVE-2018-12892: Fix libxl to honour the readonly flag on HVM emulated
     SCSI disks (XSA-266) (bsc#1097523).
   - CVE-2018-12893: Fix crash/Denial of Service (DoS) via safety check
     (XSA-265) (bsc#1097522).


   Bug fixes:

   - bsc#1027519: Add upstream patches from January.
   - bsc#1098403: Fix regression introduced by changes for bsc#1079730. A PV
     domU without qcow2 and/or vfb has no qemu attached. Ignore QMP errors     for PV domUs to handle PV domUs with and without an attached qemu-xen.
   - bsc#1087289: Fix xen scheduler crash.


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-15-2018-1342=1

   - SUSE Linux Enterprise Module for Basesystem 15:

      zypper in -t patch SUSE-SLE-Module-Basesystem-15-2018-1342=1



Package List:

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

      xen-4.10.1_06-3.3.1
      xen-debugsource-4.10.1_06-3.3.1
      xen-devel-4.10.1_06-3.3.1
      xen-tools-4.10.1_06-3.3.1
      xen-tools-debuginfo-4.10.1_06-3.3.1

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

      xen-debugsource-4.10.1_06-3.3.1
      xen-libs-4.10.1_06-3.3.1
      xen-libs-debuginfo-4.10.1_06-3.3.1
      xen-tools-domU-4.10.1_06-3.3.1
      xen-tools-domU-debuginfo-4.10.1_06-3.3.1


References:

   https://www.suse.com/security/cve/CVE-2018-12891.html
   https://www.suse.com/security/cve/CVE-2018-12892.html
   https://www.suse.com/security/cve/CVE-2018-12893.html
   https://www.suse.com/security/cve/CVE-2018-3665.html
   https://bugzilla.suse.com/1027519
   https://bugzilla.suse.com/1079730
   https://bugzilla.suse.com/1087289
   https://bugzilla.suse.com/1095242
   https://bugzilla.suse.com/1097521
   https://bugzilla.suse.com/1097522
   https://bugzilla.suse.com/1097523
   https://bugzilla.suse.com/1098403