SUSE-SU-2015:0923-1: important: Security update for xen

[sle-security-updates at lists.suse.com]

   SUSE Security Update: Security update for xen
______________________________________________________________________________

Announcement ID:    SUSE-SU-2015:0923-1
Rating:             important
References:         #922705 #922709 #927967 #929339 
Cross-References:   CVE-2015-2751 CVE-2015-2752 CVE-2015-3340
                    CVE-2015-3456
Affected Products:
                    SUSE Linux Enterprise Software Development Kit 12
                    SUSE Linux Enterprise Server 12
                    SUSE Linux Enterprise Desktop 12
______________________________________________________________________________

   An update that fixes four vulnerabilities is now available.

Description:


   XEN was updated to fix two security issues and bugs.

   Security issues fixed:
   * CVE-2015-3340: Xen did not initialize certain fields, which allowed
     certain remote service domains to obtain sensitive information from
     memory via a (1) XEN_DOMCTL_gettscinfo or (2)
     XEN_SYSCTL_getdomaininfolist request.

   * CVE-2015-2751: Xen, when using toolstack disaggregation, allowed remote
     domains with partial management control to cause a denial of service
     (host lock) via unspecified domctl operations.

   * CVE-2015-2752: The XEN_DOMCTL_memory_mapping hypercall in Xen, when
     using a PCI passthrough device, was not preemptable, which allowed local
     x86 HVM domain users to cause a denial of service (host CPU consumption)
     via a crafted request to the device model (qemu-dm).

   * CVE-2015-3456: Fixed a buffer overflow in the floppy drive emulation,
     which could be used to denial of service attacks or potential code
     execution against the host.

   Bugs fixed:
   - xentop: Fix memory leak on read failure


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:

      zypper in -t patch SUSE-SLE-SDK-12-2015-206=1

   - SUSE Linux Enterprise Server 12:

      zypper in -t patch SUSE-SLE-SERVER-12-2015-206=1

   - SUSE Linux Enterprise Desktop 12:

      zypper in -t patch SUSE-SLE-DESKTOP-12-2015-206=1

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


Package List:

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

      xen-debugsource-4.4.2_04-18.1
      xen-devel-4.4.2_04-18.1

   - SUSE Linux Enterprise Server 12 (x86_64):

      xen-4.4.2_04-18.1
      xen-debugsource-4.4.2_04-18.1
      xen-doc-html-4.4.2_04-18.1
      xen-kmp-default-4.4.2_04_k3.12.39_47-18.1
      xen-kmp-default-debuginfo-4.4.2_04_k3.12.39_47-18.1
      xen-libs-32bit-4.4.2_04-18.1
      xen-libs-4.4.2_04-18.1
      xen-libs-debuginfo-32bit-4.4.2_04-18.1
      xen-libs-debuginfo-4.4.2_04-18.1
      xen-tools-4.4.2_04-18.1
      xen-tools-debuginfo-4.4.2_04-18.1
      xen-tools-domU-4.4.2_04-18.1
      xen-tools-domU-debuginfo-4.4.2_04-18.1

   - SUSE Linux Enterprise Desktop 12 (x86_64):

      xen-4.4.2_04-18.1
      xen-debugsource-4.4.2_04-18.1
      xen-kmp-default-4.4.2_04_k3.12.39_47-18.1
      xen-kmp-default-debuginfo-4.4.2_04_k3.12.39_47-18.1
      xen-libs-32bit-4.4.2_04-18.1
      xen-libs-4.4.2_04-18.1
      xen-libs-debuginfo-32bit-4.4.2_04-18.1
      xen-libs-debuginfo-4.4.2_04-18.1


References:

   https://www.suse.com/security/cve/CVE-2015-2751.html
   https://www.suse.com/security/cve/CVE-2015-2752.html
   https://www.suse.com/security/cve/CVE-2015-3340.html
   https://www.suse.com/security/cve/CVE-2015-3456.html
   https://bugzilla.suse.com/922705
   https://bugzilla.suse.com/922709
   https://bugzilla.suse.com/927967
   https://bugzilla.suse.com/929339