SUSE Security Update: Security update for xen
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Announcement ID:    SUSE-SU-2017:2751-1
Rating:             important
References:         #1027519 #1055321 #1059777 #1061076 #1061077 
                    #1061080 #1061081 #1061082 #1061084 #1061086 
                    #1061087 
Cross-References:   CVE-2017-5526
Affected Products:
                    SUSE Linux Enterprise Software Development Kit 12-SP3
                    SUSE Linux Enterprise Server 12-SP3
                    SUSE Linux Enterprise Desktop 12-SP3
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   An update that solves one vulnerability and has 10 fixes is
   now available.

Description:

   This update for xen fixes several issues:

   These security issues were fixed:

   - CVE-2017-5526: The ES1370 audio device emulation support was vulnerable
     to a memory leakage issue allowing a privileged user inside the guest to
     cause a DoS and/or potentially crash the Qemu process on the host
     (bsc#1059777)
   - bsc#1061084: Missing cleanup in the page type system allowed a malicious
     or buggy PV guest to cause DoS (XSA-242)
   - bsc#1061086: A problem in the shadow pagetable code allowed a malicious
     or buggy HVM guest to cause DoS or cause hypervisor memory corruption
     potentially allowing the guest to escalate its privilege (XSA-243)
   - bsc#1061087: Problematic handling of the selector fields in the
     Interrupt Descriptor Table (IDT) allowed a malicious or buggy x86 PV
     guest to escalate its privileges or cause DoS (XSA-244)
   - bsc#1061077 Missing checks in the handling of DMOPs allowed malicious or
     buggy stub domain kernels or tool stacks otherwise living outside of
     Domain0 to cause a DoS (XSA-238)
   - bsc#1061080: Intercepted I/O write operations with less than a full
     machine word's worth of data were not properly handled, which allowed a
     malicious unprivileged x86 HVM guest to obtain sensitive information
     from the host or
     other guests (XSA-239)
   - bsc#1061081: In certain configurations of linear page tables a stack
     overflow might have occured that allowed a malicious or buggy PV guest
     to cause DoS and potentially privilege escalation and information leaks
     (XSA-240)
   - bsc#1061082: Under certain conditions x86 PV guests could have caused
     the hypervisor to miss a necessary TLB flush for a page. This allowed a
     malicious x86 PV guest to access all of system memory, allowing for
     privilege escalation, DoS, and information leaks (XSA-241)
   - bsc#1061076: Multiple issues existed with the setup of PCI MSI
     interrupts that allowed a malicious or buggy guest to cause DoS and
     potentially privilege escalation and information leaks (XSA-237)
   - bsc#1055321: When dealing with the grant map space of add-to-physmap
     operations, ARM specific code failed to release a lock. This allowed a
      malicious guest administrator to cause DoS (XSA-235)


Patch Instructions:

   To install this SUSE Security Update use YaST online_update.
   Alternatively you can run the command listed for your product:

   - SUSE Linux Enterprise Software Development Kit 12-SP3:

      zypper in -t patch SUSE-SLE-SDK-12-SP3-2017-1702=1

   - SUSE Linux Enterprise Server 12-SP3:

      zypper in -t patch SUSE-SLE-SERVER-12-SP3-2017-1702=1

   - SUSE Linux Enterprise Desktop 12-SP3:

      zypper in -t patch SUSE-SLE-DESKTOP-12-SP3-2017-1702=1

   To bring your system up-to-date, use "zypper patch".


Package List:

   - SUSE Linux Enterprise Software Development Kit 12-SP3 (aarch64 x86_64):

      xen-debugsource-4.9.0_14-3.18.1
      xen-devel-4.9.0_14-3.18.1

   - SUSE Linux Enterprise Server 12-SP3 (x86_64):

      xen-4.9.0_14-3.18.1
      xen-debugsource-4.9.0_14-3.18.1
      xen-doc-html-4.9.0_14-3.18.1
      xen-libs-32bit-4.9.0_14-3.18.1
      xen-libs-4.9.0_14-3.18.1
      xen-libs-debuginfo-32bit-4.9.0_14-3.18.1
      xen-libs-debuginfo-4.9.0_14-3.18.1
      xen-tools-4.9.0_14-3.18.1
      xen-tools-debuginfo-4.9.0_14-3.18.1
      xen-tools-domU-4.9.0_14-3.18.1
      xen-tools-domU-debuginfo-4.9.0_14-3.18.1

   - SUSE Linux Enterprise Desktop 12-SP3 (x86_64):

      xen-4.9.0_14-3.18.1
      xen-debugsource-4.9.0_14-3.18.1
      xen-libs-32bit-4.9.0_14-3.18.1
      xen-libs-4.9.0_14-3.18.1
      xen-libs-debuginfo-32bit-4.9.0_14-3.18.1
      xen-libs-debuginfo-4.9.0_14-3.18.1


References:

   https://www.suse.com/security/cve/CVE-2017-5526.html
   https://bugzilla.suse.com/1027519
   https://bugzilla.suse.com/1055321
   https://bugzilla.suse.com/1059777
   https://bugzilla.suse.com/1061076
   https://bugzilla.suse.com/1061077
   https://bugzilla.suse.com/1061080
   https://bugzilla.suse.com/1061081
   https://bugzilla.suse.com/1061082
   https://bugzilla.suse.com/1061084
   https://bugzilla.suse.com/1061086
   https://bugzilla.suse.com/1061087