Security update for qemu (important)

This update for qemu fixes several issues.

These security issues were fixed:

• CVE-2017-10911: The make_response function in the Linux kernel allowed
  guest OS users to obtain sensitive information from host OS (or other
  guest OS) kernel memory by leveraging the copying of uninitialized
  padding fields in Xen block-interface response structures (bsc#1057378).
• CVE-2017-12809: The IDE disk and CD/DVD-ROM Emulator support allowed
  local guest OS privileged users to cause a denial of service (NULL
  pointer dereference and QEMU process crash) by flushing an empty CDROM
  device drive (bsc#1054724).
• CVE-2017-15289: The mode4and5 write functions allowed local OS guest
  privileged users to cause a denial of service (out-of-bounds write
  access and Qemu process crash) via vectors related to dst calculation
  (bsc#1063122)
• CVE-2017-15038: Race condition in the v9fs_xattrwalk function local
  guest OS users to obtain sensitive information from host heap memory via
  vectors related to reading extended attributes (bsc#1062069)
• CVE-2017-14167: Integer overflow in the load_multiboot function allowed
  local guest OS users to execute arbitrary code on the host via crafted
  multiboot header address values, which trigger an out-of-bounds write
  (bsc#1057585)
• CVE-2017-11434: The dhcp_decode function in slirp/bootp.c allowed local
  guest OS users to cause a denial of service (out-of-bounds read) via a
  crafted DHCP options string (bsc#1049381)
• CVE-2017-11334: The address_space_write_continue function allowed local
  guest OS privileged users to cause a denial of service (out-of-bounds
  access and guest instance crash) by leveraging use of qemu_map_ram_ptr
  to access guest ram block area (bsc#1048902)
• CVE-2017-13672: The VGA display emulator support allowed local guest OS
  privileged users to cause a denial of service (out-of-bounds read and
  QEMU process crash) via vectors involving display update (bsc#1056334)
• CVE-2017-5973: A infinite loop while doing control transfer in
  xhci_kick_epctx allowed privileged user inside the guest to crash the
  host process resulting in DoS (bsc#1025109)
• CVE-2017-5987: The sdhci_sdma_transfer_multi_blocks function in
  hw/sd/sdhci.c allowed local OS guest privileged users to cause a denial
  of service (infinite loop and QEMU process crash) via vectors involving
  the transfer mode register during multi block transfer (bsc#1025311)
• CVE-2017-6505: The ohci_service_ed_list function allowed local guest OS
  users to cause a denial of service (infinite loop) via vectors involving
  the number of link endpoint list descriptors (bsc#1028184)
• CVE-2016-9603: A privileged user within the guest VM could have caused a
  heap overflow in the device model process, potentially escalating their
  privileges to that of the device model process (bsc#1028656)
• CVE-2017-7718: hw/display/cirrus_vga_rop.h allowed local guest OS
  privileged users to cause a denial of service (out-of-bounds read and
  QEMU process crash) via vectors related to copying VGA data via the
  cirrus_bitblt_rop_fwd_transp_ and cirrus_bitblt_rop_fwd_ functions
  (bsc#1034908)
• CVE-2017-7980: An out-of-bounds r/w access issues in the Cirrus CLGD
  54xx VGA Emulator support allowed privileged user inside guest to use
  this flaw to crash the Qemu process resulting in DoS or potentially
  execute arbitrary code on a host with privileges of Qemu process on the
  host (bsc#1035406)
• CVE-2017-8112: hw/scsi/vmw_pvscsi.c allowed local guest OS privileged
  users to cause a denial of service (infinite loop and CPU consumption)
  via the message ring page count (bsc#1036211)
• CVE-2017-9375: The USB xHCI controller emulator support was vulnerable
  to an infinite recursive call loop issue, which allowed a privileged
  user inside guest to crash the Qemu process resulting in DoS
  (bsc#1042800)
• CVE-2017-9374: Missing free of ‘s->ipacket’, causes a host memory leak,
  allowing for DoS (bsc#1043073)
• CVE-2017-9373: The IDE AHCI Emulation support was vulnerable to a host
  memory leakage issue, which allowed a privileged user inside guest to
  leak host memory resulting in DoS (bsc#1042801)
• 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#1042159)
• CVE-2017-8379: Memory leak in the keyboard input event handlers support
  allowed local guest OS privileged users to cause a denial of service
  (host memory consumption) by rapidly generating large keyboard events
  (bsc#1037334)
• 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#1037242)
• CVE-2017-8380: The MegaRAID SAS 8708EM2 Host Bus Adapter emulation
  support was vulnerable to an out-of-bounds read access issue which
  allowed a privileged user inside guest to read host memory resulting in
  DoS (bsc#1037336)
• CVE-2017-7493: The VirtFS, host directory sharing via Plan 9 File
  System(9pfs) support, was vulnerable to an improper access control
  issue. It could occur while accessing virtfs metadata files in
  mapped-file security mode. A guest user could have used this flaw to
  escalate their privileges inside guest (bsc#1039495)
• CVE-2016-9602: The VirtFS host directory sharing via Plan 9 File
  System(9pfs) support was vulnerable to an improper link following issue
  which allowed a privileged user inside guest to access host file system
  beyond the shared folder and potentially escalating their privileges on
  a host (bsc#1020427)
• CVE-2017-5579: The 16550A UART serial device emulation support was
  vulnerable to a memory leakage issue allowing a privileged user to cause
  a DoS and/or potentially crash the Qemu process on the host (bsc#1021741)
• CVE-2017-9503: The MegaRAID SAS 8708EM2 Host Bus Adapter emulation
  support was vulnerable to a null pointer dereference issue which allowed
  a privileged user inside guest to crash the Qemu process on the host
  resulting in DoS (bsc#1043296)
• CVE-2017-10664: qemu-nbd did not ignore SIGPIPE, which allowed remote
  attackers to cause a denial of service (daemon crash) by disconnecting
  during a server-to-client reply attempt (bsc#1046636)
• CVE-2017-10806: Stack-based buffer overflow allowed local guest OS users
  to cause a denial of service (QEMU process crash) via vectors related to
  logging debug messages (bsc#1047674)
• CVE-2016-9602: The VirtFS host directory sharing via Plan 9 File
  System(9pfs) support was vulnerable to an improper link following issue
  which allowed a privileged user inside guest to access host file system
  beyond the shared folder and potentially escalating their privileges on
  a host (bsc#1020427)
• CVE-2017-7377: The v9fs_create and v9fs_lcreate functions in
  hw/9pfs/9p.c allowed local guest OS privileged users to cause a denial
  of service (file descriptor or memory consumption) via vectors related
  to an already in-use fid (bsc#1032075)
• CVE-2017-8086: A memory leak in the v9fs_list_xattr function in
  hw/9pfs/9p-xattr.c allowed local guest OS privileged users to cause a
  denial of service (memory consumption) via vectors involving the
  orig_value variable (bsc#1035950)
• CVE-2017-7471: The VirtFS host directory sharing via Plan 9 File
  System(9pfs) support was vulnerable to an improper access control issue
  which allowed a privileged user inside guest to access host file system
  beyond the shared folder and potentially escalating their privileges on
  a host (bsc#1034866)
• CVE-2016-6835: Buffer overflow in the VMWARE VMXNET3 NIC device support,
  causing an OOB read access (bsc#994605)
• 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#994418)
• Fix privilege escalation in TCG mode (bsc#1030624)

This non-security issue was fixed:

• Fix regression introduced by recent virtfs security fixes (bsc#1045035)