Security update for kvm

SUSE Security Update: Security update for kvm
Announcement ID: SUSE-SU-2016:2628-1
Rating: moderate
References: #902737 #944697 #967012 #967013 #982017 #982018 #982019 #982222 #982223 #982285 #982959 #983961 #983982 #991080 #991466 #996441
Affected Products:
  • SUSE Linux Enterprise Server 11-SP4

  • An update that fixes 16 vulnerabilities is now available.

    Description:

    kvm was updated to fix 16 security issues.

    These security issues were fixed:
    - CVE-2015-6815: e1000 NIC emulation support was vulnerable to an infinite
    loop issue. A privileged user inside guest could have used this flaw to
    crash the Qemu instance resulting in DoS. (bsc#944697).
    - CVE-2016-2391: The ohci_bus_start function in the USB OHCI emulation
    support (hw/usb/hcd-ohci.c) in QEMU allowed local guest OS
    administrators to cause a denial of service (NULL pointer dereference
    and QEMU process crash) via vectors related to multiple eof_timers
    (bsc#967013).
    - CVE-2016-2392: The is_rndis function in the USB Net device emulator
    (hw/usb/dev-network.c) in QEMU did not properly validate USB
    configuration descriptor objects, which allowed local guest OS
    administrators to cause a denial of service (NULL pointer dereference
    and QEMU process crash) via vectors involving a remote NDIS control
    message packet (bsc#967012).
    - CVE-2016-4453: The vmsvga_fifo_run function in hw/display/vmware_vga.c
    in QEMU allowed local guest OS administrators to cause a denial of
    service (infinite loop and QEMU process crash) via a VGA command
    (bsc#982223).
    - CVE-2016-4454: The vmsvga_fifo_read_raw function in
    hw/display/vmware_vga.c in QEMU 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 triggers an out-of-bounds read (bsc#982222).
    - CVE-2016-5105: The megasas_dcmd_cfg_read function in hw/scsi/megasas.c
    in QEMU, when built with MegaRAID SAS 8708EM2 Host Bus Adapter emulation
    support, used an uninitialized variable, which allowed local guest
    administrators to read host memory via vectors involving a MegaRAID
    Firmware Interface (MFI) command (bsc#982017).
    - CVE-2016-5106: The megasas_dcmd_set_properties function in
    hw/scsi/megasas.c in QEMU, when built with MegaRAID SAS 8708EM2 Host Bus
    Adapter emulation support, allowed local guest administrators to cause a
    denial of service (out-of-bounds write access) via vectors involving a
    MegaRAID Firmware Interface (MFI) command (bsc#982018).
    - CVE-2016-5107: The megasas_lookup_frame function in QEMU, when built
    with MegaRAID SAS 8708EM2 Host Bus Adapter emulation support, allowed
    local guest OS administrators to cause a denial of service
    (out-of-bounds read and crash) via unspecified vectors (bsc#982019).
    - CVE-2016-5126: Heap-based buffer overflow in the iscsi_aio_ioctl
    function in block/iscsi.c in QEMU 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#982285).
    - CVE-2016-5238: The get_cmd function in hw/scsi/esp.c in QEMU 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#982959).
    - CVE-2016-5337: The megasas_ctrl_get_info function in hw/scsi/megasas.c
    in QEMU allowed local guest OS administrators to obtain sensitive host
    memory information via vectors related to reading device control
    information (bsc#983961).
    - CVE-2016-5338: The (1) esp_reg_read and (2) esp_reg_write functions in
    hw/scsi/esp.c in QEMU allowed local guest OS administrators to cause a
    denial of service (QEMU process crash) or execute arbitrary code on the
    QEMU host via vectors related to the information transfer buffer
    (bsc#983982).
    - CVE-2016-5403: The virtqueue_pop function in hw/virtio/virtio.c in QEMU
    allowed local guest OS administrators to cause a denial of service
    (memory consumption and QEMU process crash) by submitting requests
    without waiting for completion (bsc#991080).
    - CVE-2016-6490: Infinite loop in the virtio framework. A privileged user
    inside the guest could have used this flaw to crash the Qemu instance on
    the host resulting in DoS (bsc#991466).
    - CVE-2016-7116: Host directory sharing via Plan 9 File System(9pfs) was
    vulnerable to a directory/path traversal issue. A privileged user inside
    guest could have used this flaw to access undue files on the host
    (bsc#996441).
    - CVE-2014-7815: The set_pixel_format function in ui/vnc.c in QEMU allowed
    remote attackers to cause a denial of service (crash) via a small
    bytes_per_pixel value (bsc#902737).

    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-SP4:
      zypper in -t patch slessp4-kvm-12816=1

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

    Package List:

    • SUSE Linux Enterprise Server 11-SP4 (i586 s390x x86_64):
      • kvm-1.4.2-47.1

    References: