SUSE Security Update: Security update for xen
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Announcement ID:    SUSE-SU-2019:2960-1
Rating:             important
References:         #1152497 #1154448 #1154456 #1154458 #1154461 
                    #1155945 
Cross-References:   CVE-2018-12207 CVE-2019-11135 CVE-2019-18420
                    CVE-2019-18421 CVE-2019-18424 CVE-2019-18425
                   
Affected Products:
                    SUSE Linux Enterprise Module for Server Applications 15
                    SUSE Linux Enterprise Module for Basesystem 15
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   An update that fixes 6 vulnerabilities is now available.

Description:

   This update for xen fixes the following issues:

   - CVE-2018-12207: Untrusted virtual machines on Intel CPUs could exploit a
     race condition in the Instruction Fetch Unit of the Intel CPU to cause a
     Machine Exception during Page Size Change, causing the CPU core to be
     non-functional. (bsc#1155945)
   - CVE-2019-11135: Aborting an asynchronous TSX operation on Intel CPUs
     with Transactional Memory support could be used to facilitate
     sidechannel information leaks out of microarchitectural buffers, similar
     to the previously described "Microarchitectural Data Sampling" attack.
     (bsc#1152497).
   - CVE-2019-18425: 32-bit PV guest user mode could elevate its privileges
     to that
     of the guest kernel. (bsc#1154456).
   - CVE-2019-18421: A malicious PV guest administrator may have been able to
     escalate their privilege to that of the host. (bsc#1154458).
   - CVE-2019-18420: Malicious x86 PV guests may have caused a hypervisor
     crash, resulting in a Denial of Service (Dos). (bsc#1154448)


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-15-2019-2960=1

   - SUSE Linux Enterprise Module for Basesystem 15:

      zypper in -t patch SUSE-SLE-Module-Basesystem-15-2019-2960=1



Package List:

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

      xen-4.10.4_06-3.25.1
      xen-debugsource-4.10.4_06-3.25.1
      xen-devel-4.10.4_06-3.25.1
      xen-tools-4.10.4_06-3.25.1
      xen-tools-debuginfo-4.10.4_06-3.25.1

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

      xen-debugsource-4.10.4_06-3.25.1
      xen-libs-4.10.4_06-3.25.1
      xen-libs-debuginfo-4.10.4_06-3.25.1
      xen-tools-domU-4.10.4_06-3.25.1
      xen-tools-domU-debuginfo-4.10.4_06-3.25.1


References:

   https://www.suse.com/security/cve/CVE-2018-12207.html
   https://www.suse.com/security/cve/CVE-2019-11135.html
   https://www.suse.com/security/cve/CVE-2019-18420.html
   https://www.suse.com/security/cve/CVE-2019-18421.html
   https://www.suse.com/security/cve/CVE-2019-18424.html
   https://www.suse.com/security/cve/CVE-2019-18425.html
   https://bugzilla.suse.com/1152497
   https://bugzilla.suse.com/1154448
   https://bugzilla.suse.com/1154456
   https://bugzilla.suse.com/1154458
   https://bugzilla.suse.com/1154461
   https://bugzilla.suse.com/1155945

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