SUSE Security Update: Security update for xen
______________________________________________________________________________

Announcement ID:    SUSE-SU-2020:1138-1
Rating:             important
References:         #1027519 #1155200 #1160932 #1161181 #1167152 
                    #1168140 #1168142 #1168143 #1169392 
Cross-References:   CVE-2020-11739 CVE-2020-11740 CVE-2020-11741
                    CVE-2020-11742 CVE-2020-11743 CVE-2020-7211
                   
Affected Products:
                    SUSE Linux Enterprise Software Development Kit 12-SP4
                    SUSE Linux Enterprise Server 12-SP4
______________________________________________________________________________

   An update that solves 6 vulnerabilities and has three fixes
   is now available.

Description:

   This update for xen fixes the following issues:

   Security issues fixed:

   - CVE-2020-11742: Bad continuation handling in GNTTABOP_copy (bsc#1169392).
   - CVE-2020-11740, CVE-2020-11741: xen: XSA-313 multiple xenoprof issues
     (bsc#1168140).
   - CVE-2020-11739: Missing memory barriers in read-write unlock paths
     (bsc#1168142).
   - CVE-2020-11743: Bad error path in GNTTABOP_map_grant (bsc#1168143).
   - CVE-2020-7211: Fixed potential directory traversal using relative paths
     via tftp server on Windows host (bsc#1161181).
   - arm: a CPU may speculate past the ERET instruction (bsc#1160932).

   Non-security issues fixed:

   - Xenstored Crashed during VM install (bsc#1167152)
   - DomU hang: soft lockup CPU #0 stuck under high load (bsc#1165206,
     bsc#1134506)
   - Update API compatibility versions, fixes issues for libvirt.
     (bsc#1167007, bsc#1157490)
   - aacraid blocks xen commands (bsc#1155200)


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 Software Development Kit 12-SP4:

      zypper in -t patch SUSE-SLE-SDK-12-SP4-2020-1138=1

   - SUSE Linux Enterprise Server 12-SP4:

      zypper in -t patch SUSE-SLE-SERVER-12-SP4-2020-1138=1



Package List:

   - SUSE Linux Enterprise Software Development Kit 12-SP4 (aarch64 x86_64):

      xen-debugsource-4.11.3_04-2.23.1
      xen-devel-4.11.3_04-2.23.1

   - SUSE Linux Enterprise Server 12-SP4 (x86_64):

      xen-4.11.3_04-2.23.1
      xen-debugsource-4.11.3_04-2.23.1
      xen-doc-html-4.11.3_04-2.23.1
      xen-libs-32bit-4.11.3_04-2.23.1
      xen-libs-4.11.3_04-2.23.1
      xen-libs-debuginfo-32bit-4.11.3_04-2.23.1
      xen-libs-debuginfo-4.11.3_04-2.23.1
      xen-tools-4.11.3_04-2.23.1
      xen-tools-debuginfo-4.11.3_04-2.23.1
      xen-tools-domU-4.11.3_04-2.23.1
      xen-tools-domU-debuginfo-4.11.3_04-2.23.1


References:

   https://www.suse.com/security/cve/CVE-2020-11739.html
   https://www.suse.com/security/cve/CVE-2020-11740.html
   https://www.suse.com/security/cve/CVE-2020-11741.html
   https://www.suse.com/security/cve/CVE-2020-11742.html
   https://www.suse.com/security/cve/CVE-2020-11743.html
   https://www.suse.com/security/cve/CVE-2020-7211.html
   https://bugzilla.suse.com/1027519
   https://bugzilla.suse.com/1155200
   https://bugzilla.suse.com/1160932
   https://bugzilla.suse.com/1161181
   https://bugzilla.suse.com/1167152
   https://bugzilla.suse.com/1168140
   https://bugzilla.suse.com/1168142
   https://bugzilla.suse.com/1168143
   https://bugzilla.suse.com/1169392

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