Security update for xen

SUSE Security Update: Security update for xen
Announcement ID: SUSE-SU-2016:2533-1
Rating: important
References: #953339 #953362 #953518 #954872 #955399 #957986 #958848 #961600 #963161 #964427 #970135 #971949 #973188 #973631 #974038 #975130 #975138 #975907 #976058 #976111 #978164 #978295 #978413 #979035 #979620 #979670 #980716 #980724 #981264 #981276 #982024 #982025 #982026 #982224 #982225 #982286 #982695 #982960 #983973 #983984 #984981 #985503 #986586 #988675 #990843 #990923 #990970 #991934 #992224 #994421 #994625 #994761 #994772 #994775 #995785 #995789 #995792 #997731
Affected Products:
  • SUSE Linux Enterprise Server for SAP 12
  • SUSE Linux Enterprise Server 12-LTSS

  • An update that solves 38 vulnerabilities and has 20 fixes is now available.

    Description:

    This update for xen fixes several issues.

    These security issues were fixed:
    - CVE-2014-3672: The qemu implementation in libvirt Xen allowed local
    guest OS users to cause a denial of service (host disk consumption) by
    writing to stdout or stderr (bsc#981264).
    - CVE-2016-3158: The xrstor function did not properly handle writes to the
    hardware FSW.ES bit when running on AMD64 processors, which allowed
    local guest OS users to obtain sensitive register content information
    from another guest by leveraging pending exception and mask bits
    (bsc#973188).
    - CVE-2016-3159: The fpu_fxrstor function in arch/x86/i387.c did not
    properly handle writes to the hardware FSW.ES bit when running on AMD64
    processors, which allowed local guest OS users to obtain sensitive
    register content information from another guest by leveraging pending
    exception and mask bits (bsc#973188).
    - CVE-2016-3710: The VGA module improperly performed bounds checking on
    banked access to video memory, which allowed local guest OS
    administrators to execute arbitrary code on the host by changing access
    modes after setting the bank register, aka the "Dark Portal" issue
    (bsc#978164)
    - CVE-2016-3960: Integer overflow in the x86 shadow pagetable code allowed
    local guest OS users to cause a denial of service (host crash) or
    possibly gain privileges by shadowing a superpage mapping (bsc#974038).
    - CVE-2016-4001: Buffer overflow in the stellaris_enet_receive function,
    when the Stellaris ethernet controller is configured to accept large
    packets, allowed remote attackers to cause a denial of service (QEMU
    crash) via a large packet (bsc#975130).
    - CVE-2016-4002: Buffer overflow in the mipsnet_receive function, when the
    guest NIC is configured to accept large packets, allowed remote
    attackers to cause a denial of service (memory corruption and QEMU
    crash) or possibly execute arbitrary code via a packet larger than 1514
    bytes (bsc#975138).
    - CVE-2016-4020: The patch_instruction function did not initialize the
    imm32 variable, which allowed local guest OS administrators to obtain
    sensitive information from host stack memory by accessing the Task
    Priority Register (TPR) (bsc#975907)
    - CVE-2016-4037: The ehci_advance_state function in hw/usb/hcd-ehci.c
    allowed local guest OS administrators to cause a denial of service
    (infinite loop and CPU consumption) via a circular split isochronous
    transfer descriptor (siTD) list (bsc#976111)
    - CVE-2016-4439: The esp_reg_write function in the 53C9X Fast SCSI
    Controller (FSC) support did not properly check command buffer length,
    which allowed local guest OS administrators to cause a denial of service
    (out-of-bounds write and QEMU process crash) or potentially execute
    arbitrary code on the host via unspecified vectors (bsc#980716)
    - CVE-2016-4441: The get_cmd function in the 53C9X Fast SCSI Controller
    (FSC) support did not properly check DMA length, which allowed local
    guest OS administrators to cause a denial of service (out-of-bounds
    write and QEMU process crash) via unspecified vectors, involving an SCSI
    command (bsc#980724)
    - CVE-2016-4453: The vmsvga_fifo_run function allowed local guest OS
    administrators to cause a denial of service (infinite loop and QEMU
    process crash) via a VGA command (bsc#982225)
    - CVE-2016-4454: The vmsvga_fifo_read_raw function allowed local guest OS
    administrators to obtain sensitive host memory information or cause a
    denial of service (QEMU process crash) by changing FIFO registers and
    issuing a VGA command, which triggered an out-of-bounds read (bsc#982224)
    - CVE-2016-4480: The guest_walk_tables function in
    arch/x86/mm/guest_walk.c in Xen did not properly handle the Page Size
    (PS) page table entry bit at the L4 and L3 page table levels, which
    might have allowed local guest OS users to gain privileges via a crafted
    mapping of memory (bsc#978295).
    - CVE-2016-4952: Out-of-bounds access issue in pvsci_ring_init_msg/data
    routines (bsc#981276)
    - CVE-2016-4962: The libxl device-handling allowed local OS guest
    administrators to cause a denial of service (resource consumption or
    management facility confusion) or gain host OS privileges by
    manipulating information in guest controlled areas of xenstore
    (bsc#979620)
    - CVE-2016-4963: The libxl device-handling allowed local guest OS users
    with access to the driver domain to cause a denial of service
    (management tool confusion) by manipulating information in the backend
    directories in xenstore (bsc#979670)
    - CVE-2016-5105: Stack information leakage while reading configuration
    (bsc#982024)
    - CVE-2016-5106: Out-of-bounds write while setting controller properties
    (bsc#982025)
    - CVE-2016-5107: Out-of-bounds read in megasas_lookup_frame() function
    (bsc#982026)
    - CVE-2016-5126: Heap-based buffer overflow in the iscsi_aio_ioctl
    function allowed local guest OS users to cause a denial of service (QEMU
    process crash) or possibly execute arbitrary code via a crafted iSCSI
    asynchronous I/O ioctl call (bsc#982286)
    - CVE-2016-5238: The get_cmd function in hw/scsi/esp.c might have allowed
    local guest OS administrators to cause a denial of service
    (out-of-bounds write and QEMU process crash) via vectors related to
    reading from the information transfer buffer in non-DMA mode (bsc#982960)
    - CVE-2016-5337: The megasas_ctrl_get_info function allowed local guest OS
    administrators to obtain sensitive host memory information via vectors
    related to reading device control information (bsc#983973)
    - CVE-2016-5338: The (1) esp_reg_read and (2) esp_reg_write functions
    allowed local guest OS administrators to cause a denial of service (QEMU
    process crash) or execute arbitrary code on the host via vectors related
    to the information transfer buffer (bsc#983984)
    - CVE-2016-5403: virtio: unbounded memory allocation on host via guest
    leading to DoS (XSA-184) (bsc#990923)
    - 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-2016-6351: The esp_do_dma function in hw/scsi/esp.c, when built with
    ESP/NCR53C9x controller emulation support, allowed local guest OS
    administrators to cause a denial of service (out-of-bounds write and
    QEMU process crash) or execute arbitrary code on the host via vectors
    involving DMA read into ESP command buffer (bsc#990843).
    - CVE-2016-6833: A use-after-free issue in the VMWARE VMXNET3 NIC device
    support allowed privileged user inside guest to crash the Qemu instance
    resulting in DoS (bsc#994775).
    - CVE-2016-6834: A infinite loop during packet fragmentation in the VMWARE
    VMXNET3 NIC device support allowed privileged user inside guest to crash
    the Qemu instance resulting in DoS (bsc#994421).
    - CVE-2016-6835: Buffer overflow in the VMWARE VMXNET3 NIC device support,
    causing an OOB read access (bsc#994625).
    - CVE-2016-6836: VMWARE VMXNET3 NIC device allowed privileged user inside
    the guest to leak information. It occured while processing transmit(tx)
    queue, when it reaches the end of packet (bsc#994761).
    - CVE-2016-6888: A integer overflow int the VMWARE VMXNET3 NIC device
    support, during the initialisation of new packets in the device, could
    have allowed a privileged user inside guest to crash the Qemu instance
    resulting in DoS (bsc#994772).
    - 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-2016-7154: Use-after-free vulnerability in the FIFO event channel
    code in Xen allowed local guest OS administrators to cause a denial of
    service (host crash) and possibly execute arbitrary code or obtain
    sensitive information via an invalid guest frame number (bsc#997731).

    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#970135: New virtualization project clock test randomly fails on Xen
    - bsc#971949: xl: Support (by ignoring) xl migrate --live. xl migrations
    are always live
    - bsc#990970: Add PMU support for Intel E7-8867 v4 (fam=6, model=79)
    - bsc#985503: vif-route broken
    - bsc#978413: PV guest upgrade from sles11sp4 to sles12sp2 alpha3 failed
    on sles11sp4 xen host.
    - bsc#986586: Out of memory (oom) during boot on "modprobe xenblk" (non
    xen kernel)
    - bsc#953339, bsc#953362, bsc#953518, bsc#984981: Implement SUSE specific
    unplug protocol for emulated PCI devices in PVonHVM guests to
    qemu-xen-upstream
    - bsc#958848: HVM guest crash at /usr/src/packages/BUILD/
    xen-4.4.2-testing/obj/default/balloon/balloon.c:407
    - bsc#982695: xen-4.5.2 qemu fails to boot HVM guest from xvda
    - bsc#954872: script block-dmmd not working as expected
    - bsc#961600: : poor performance when Xen HVM domU configured with max
    memory > current memory
    - bsc#979035: Restore xm migrate fixes for bsc#955399/ bsc#955399
    - bsc#963161: Windows VM getting stuck during load while a VF is assigned
    to it
    - bsc#976058: Xen error running simple HVM guest (Post Alpha 2 xen+qemu)
    - bsc#957986: Indirect descriptors are not compatible with Amazon block
    backend
    - bsc#973631: AWS EC2 kdump issue
    - bsc#964427: Discarding device blocks failed with input/output error

    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 for SAP 12:
      zypper in -t patch SUSE-SLE-SAP-12-2016-1476=1
    • SUSE Linux Enterprise Server 12-LTSS:
      zypper in -t patch SUSE-SLE-SERVER-12-2016-1476=1

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

    Package List:

    • SUSE Linux Enterprise Server for SAP 12 (x86_64):
      • xen-4.4.4_04-22.22.2
      • xen-debugsource-4.4.4_04-22.22.2
      • xen-doc-html-4.4.4_04-22.22.2
      • xen-kmp-default-4.4.4_04_k3.12.60_52.54-22.22.2
      • xen-kmp-default-debuginfo-4.4.4_04_k3.12.60_52.54-22.22.2
      • xen-libs-32bit-4.4.4_04-22.22.2
      • xen-libs-4.4.4_04-22.22.2
      • xen-libs-debuginfo-32bit-4.4.4_04-22.22.2
      • xen-libs-debuginfo-4.4.4_04-22.22.2
      • xen-tools-4.4.4_04-22.22.2
      • xen-tools-debuginfo-4.4.4_04-22.22.2
      • xen-tools-domU-4.4.4_04-22.22.2
      • xen-tools-domU-debuginfo-4.4.4_04-22.22.2
    • SUSE Linux Enterprise Server 12-LTSS (x86_64):
      • xen-4.4.4_04-22.22.2
      • xen-debugsource-4.4.4_04-22.22.2
      • xen-doc-html-4.4.4_04-22.22.2
      • xen-kmp-default-4.4.4_04_k3.12.60_52.54-22.22.2
      • xen-kmp-default-debuginfo-4.4.4_04_k3.12.60_52.54-22.22.2
      • xen-libs-32bit-4.4.4_04-22.22.2
      • xen-libs-4.4.4_04-22.22.2
      • xen-libs-debuginfo-32bit-4.4.4_04-22.22.2
      • xen-libs-debuginfo-4.4.4_04-22.22.2
      • xen-tools-4.4.4_04-22.22.2
      • xen-tools-debuginfo-4.4.4_04-22.22.2
      • xen-tools-domU-4.4.4_04-22.22.2
      • xen-tools-domU-debuginfo-4.4.4_04-22.22.2

    References: