Security update for xen

SUSE Security Update: Security update for xen
Announcement ID: SUSE-SU-2017:1715-1
Rating: important
References: #1034845 #1037243 #1042160 #1042863 #1042882 #1042893 #1042915 #1042931 #1042938
Affected Products:
  • SUSE Linux Enterprise Server 11-SP3-LTSS
  • SUSE Linux Enterprise Point of Sale 11-SP3
  • SUSE Linux Enterprise Debuginfo 11-SP3
    		•

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

    Description:

    This update for xen fixes the following security issues:

    - blkif responses leaked backend stack data, which allowed unprivileged
    guest to obtain sensitive information from the host or other guests
    (XSA-216, bsc#1042863)
    - Page transfer might have allowed PV guest to elevate privilege (XSA-217,
    bsc#1042882)
    - Races in the grant table unmap code allowed for informations leaks and
    potentially privilege escalation (XSA-218, bsc#1042893)
    - Insufficient reference counts during shadow emulation allowed a
    malicious pair of guest to elevate their privileges to the privileges
    that XEN runs under (XSA-219, bsc#1042915)
    - Stale P2M mappings due to insufficient error checking allowed malicious
    guest to leak information or elevate privileges (XSA-222, bsc#1042931)
    - Grant table operations mishandled reference counts allowing malicious
    guests to escape (XSA-224, bsc#1042938)
    - CVE-2017-9330: USB OHCI Emulation in qemu allowed local guest OS users
    to cause a denial of service (infinite loop) by leveraging an incorrect
    return value (bsc#1042160)
    - CVE-2017-8309: Memory leak in the audio/audio.c allowed remote attackers
    to cause a denial of service (memory consumption) by repeatedly starting
    and stopping audio capture (bsc#1037243)
    - CVE-2017-8905: Xen a failsafe callback, which might have allowed PV
    guest OS users to execute arbitrary code on the host OS (XSA-215,
    bsc#1034845).

    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 Server 11-SP3-LTSS:
      zypper in -t patch slessp3-xen-13181=1
    • SUSE Linux Enterprise Point of Sale 11-SP3:
      zypper in -t patch sleposp3-xen-13181=1
    • SUSE Linux Enterprise Debuginfo 11-SP3:
      zypper in -t patch dbgsp3-xen-13181=1

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

    Package List:

    • SUSE Linux Enterprise Server 11-SP3-LTSS (i586 x86_64):
      • xen-kmp-default-4.2.5_21_3.0.101_0.47.102-44.1
      • xen-libs-4.2.5_21-44.1
      • xen-tools-domU-4.2.5_21-44.1
    • SUSE Linux Enterprise Server 11-SP3-LTSS (x86_64):
      • xen-4.2.5_21-44.1
      • xen-doc-html-4.2.5_21-44.1
      • xen-doc-pdf-4.2.5_21-44.1
      • xen-libs-32bit-4.2.5_21-44.1
      • xen-tools-4.2.5_21-44.1
    • SUSE Linux Enterprise Server 11-SP3-LTSS (i586):
      • xen-kmp-pae-4.2.5_21_3.0.101_0.47.102-44.1
    • SUSE Linux Enterprise Point of Sale 11-SP3 (i586):
      • xen-kmp-default-4.2.5_21_3.0.101_0.47.102-44.1
      • xen-kmp-pae-4.2.5_21_3.0.101_0.47.102-44.1
      • xen-libs-4.2.5_21-44.1
      • xen-tools-domU-4.2.5_21-44.1
    • SUSE Linux Enterprise Debuginfo 11-SP3 (i586 x86_64):
      • xen-debuginfo-4.2.5_21-44.1
      • xen-debugsource-4.2.5_21-44.1

    References: