Security update for xen

SUSE Security Update: Security update for xen
Announcement ID: SUSE-SU-2016:2473-1
Rating: important
References: #953518 #955104 #959330 #959552 #970135 #971949 #988675 #988676 #990500 #990970 #991934 #992224 #993665 #994421 #994625 #994761 #994772 #994775 #995785 #995789 #995792
Affected Products:
  • SUSE Linux Enterprise Software Development Kit 12-SP1
  • SUSE Linux Enterprise Server 12-SP1
  • SUSE Linux Enterprise Desktop 12-SP1

  • An update that solves 10 vulnerabilities and has 11 fixes is now available.

    Description:

    This update for xen fixes several issues.

    These security issues were fixed:
    - CVE-2016-7092: The get_page_from_l3e function in arch/x86/mm.c in Xen
    allowed local 32-bit PV guest OS administrators to gain host OS
    privileges via vectors related to L3 recursive pagetables (bsc#995785).
    - CVE-2016-7093: Xen allowed local HVM guest OS administrators to
    overwrite hypervisor memory and consequently gain host OS privileges by
    leveraging mishandling of instruction pointer truncation during
    emulation (bsc#995789).
    - CVE-2016-7094: Buffer overflow in Xen allowed local x86 HVM guest OS
    administrators on guests running with shadow paging to cause a denial of
    service via a pagetable update (bsc#995792).
    - CVE-2016-6836: Information leakage in vmxnet3_complete_packet
    (bsc#994761).
    - CVE-2016-6888: Integer overflow in packet initialisation in VMXNET3
    device driver. Aprivileged user inside guest c... (bsc#994772).
    - CVE-2016-6833: Use after free while writing (bsc#994775).
    - CVE-2016-6835: Buffer overflow in vmxnet_tx_pkt_parse_headers() in
    vmxnet3 deviceemulation. (bsc#994625).
    - CVE-2016-6834: An infinite loop during packet fragmentation (bsc#994421).
    - CVE-2016-6258: The PV pagetable code in arch/x86/mm.c in Xen allowed
    local 32-bit PV guest OS administrators to gain host OS privileges by
    leveraging fast-paths for updating pagetable entries (bsc#988675).
    - CVE-2016-6259: Xen did not implement Supervisor Mode Access Prevention
    (SMAP) whitelisting in 32-bit exception and event delivery, which
    allowed local 32-bit PV guest OS kernels to cause a denial of service
    (hypervisor and VM crash) by triggering a safety check (bsc#988676).

    These non-security issues were fixed:
    - bsc#991934: Hypervisor crash in csched_acct
    - bsc#992224: During boot of Xen Hypervisor, failed to get contiguous
    memory for DMA
    - bsc#955104: Virsh reports error "one or more references were leaked
    after disconnect from hypervisor" when "virsh save" failed due to "no
    response from client after 6 keepalive messages"
    - bsc#959552: Migration of HVM guest leads into libvirt segmentation fault
    - bsc#993665: Migration of xen guests finishes in: One or more references
    were leaked after disconnect from the hypervisor
    - bsc#959330: Guest migrations using virsh results in error "Internal
    error: received hangup / error event on socket"
    - bsc#990500: VM virsh migration fails with keepalive error:
    ":virKeepAliveTimerInternal:143 : No response from client"
    - bsc#953518: Unplug also SCSI disks in qemu-xen-traditional for upstream
    unplug protocol
    - bsc#953518: xen_platform: unplug also SCSI disks in qemu-xen
    - bsc#971949: xl: Support (by ignoring) xl migrate --live. xl migrations
    are always live
    - bsc#970135: New virtualization project clock test randomly fails on Xen
    - bsc#990970: Add PMU support for Intel E7-8867 v4 (fam=6, model=79)

    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-SP1:
      zypper in -t patch SUSE-SLE-SDK-12-SP1-2016-1444=1
    • SUSE Linux Enterprise Server 12-SP1:
      zypper in -t patch SUSE-SLE-SERVER-12-SP1-2016-1444=1
    • SUSE Linux Enterprise Desktop 12-SP1:
      zypper in -t patch SUSE-SLE-DESKTOP-12-SP1-2016-1444=1

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

    Package List:

    • SUSE Linux Enterprise Software Development Kit 12-SP1 (x86_64):
      • xen-debugsource-4.5.3_10-20.1
      • xen-devel-4.5.3_10-20.1
    • SUSE Linux Enterprise Server 12-SP1 (x86_64):
      • xen-4.5.3_10-20.1
      • xen-debugsource-4.5.3_10-20.1
      • xen-doc-html-4.5.3_10-20.1
      • xen-kmp-default-4.5.3_10_k3.12.62_60.62-20.1
      • xen-kmp-default-debuginfo-4.5.3_10_k3.12.62_60.62-20.1
      • xen-libs-32bit-4.5.3_10-20.1
      • xen-libs-4.5.3_10-20.1
      • xen-libs-debuginfo-32bit-4.5.3_10-20.1
      • xen-libs-debuginfo-4.5.3_10-20.1
      • xen-tools-4.5.3_10-20.1
      • xen-tools-debuginfo-4.5.3_10-20.1
      • xen-tools-domU-4.5.3_10-20.1
      • xen-tools-domU-debuginfo-4.5.3_10-20.1
    • SUSE Linux Enterprise Desktop 12-SP1 (x86_64):
      • xen-4.5.3_10-20.1
      • xen-debugsource-4.5.3_10-20.1
      • xen-kmp-default-4.5.3_10_k3.12.62_60.62-20.1
      • xen-kmp-default-debuginfo-4.5.3_10_k3.12.62_60.62-20.1
      • xen-libs-32bit-4.5.3_10-20.1
      • xen-libs-4.5.3_10-20.1
      • xen-libs-debuginfo-32bit-4.5.3_10-20.1
      • xen-libs-debuginfo-4.5.3_10-20.1

    References: