Security update for qemu (important)

This update for qemu fixes several issues.

These security issues were fixed:

• CVE-2017-5898: The CCID Card device emulator support was vulnerable to
  an integer overflow flaw allowing a privileged user to crash the Qemu
  process on the host resulting in DoS (bsc#1023907).
• CVE-2017-5857: The Virtio GPU Device emulator support was vulnerable to
  a host memory leakage issue allowing a guest user to leak host memory
  resulting in DoS (bsc#1023073).
• CVE-2017-2620: In CIRRUS_BLTMODE_MEMSYSSRC mode the bitblit copy routine
  cirrus_bitblt_cputovideo failed to check the memory region, allowing for
  an out-of-bounds write that allows for privilege escalation (bsc#1024972)
• CVE-2017-2615: An error in the bitblt copy operation could have allowed
  a malicious guest administrator to cause an out of bounds memory access,
  possibly leading to information disclosure or privilege escalation
  (bsc#1023004)
• CVE-2017-5856: The MegaRAID SAS 8708EM2 Host Bus Adapter emulation
  support was vulnerable to a memory leakage issue allowing a privileged
  user to leak host memory resulting in DoS (bsc#1023053)
• CVE-2016-9921: The Cirrus CLGD 54xx VGA Emulator support was vulnerable
  to a divide by zero issue while copying VGA data. A privileged user
  inside guest could have used this flaw to crash the process instance on
  the host, resulting in DoS (bsc#1014702)
• CVE-2016-9922: The Cirrus CLGD 54xx VGA Emulator support was vulnerable
  to a divide by zero issue while copying VGA data. A privileged user
  inside guest could have used this flaw to crash the process instance on
  the host, resulting in DoS (bsc#1014702)
• CVE-2016-10029: The Virtio GPU Device emulator support was vulnerable to
  an OOB read issue allowing a guest user to crash the Qemu process
  instance resulting in Dos (bsc#1017081).
• CVE-2016-10028: The Virtio GPU Device emulator support was vulnerable to
  an out of bounds memory access issue allowing a guest user to crash the
  Qemu process instance on a host, resulting in DoS (bsc#1017084).
• CVE-2016-10155: The virtual hardware watchdog ‘wdt_i6300esb’ 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#1021129)
• CVE-2017-5552: The Virtio GPU Device emulator support was vulnerable to
  a memory leakage issue allowing a guest user to leak host memory
  resulting in DoS (bsc#1021195).
• CVE-2017-5578: The Virtio GPU Device emulator support was vulnerable to
  a memory leakage issue allowing a guest user to leak host memory
  resulting in DoS (bsc#1021481).
• CVE-2017-5526: The ES1370 audio device emulation support was vulnerable
  to a memory leakage issue allowing a privileged user inside the guest to
  cause a DoS and/or potentially crash the Qemu process on the host
  (bsc#1020589).
• CVE-2017-5525: The ac97 audio device emulation support was vulnerable to
  a memory leakage issue allowing a privileged user inside the guest to
  cause a DoS and/or potentially crash the Qemu process on the host
  (bsc#1020491).
• CVE-2017-5667: The SDHCI device emulation support was vulnerable to an
  OOB heap access issue allowing a privileged user inside the guest to
  crash the Qemu process resulting in DoS or potentially execute arbitrary
  code with privileges of the Qemu process on the host (bsc#1022541).
• CVE-2017-5898: The CCID Card device emulator support was vulnerable to
  an integer overflow allowing a privileged user inside the guest to crash
  the Qemu process resulting in DoS (bnc#1023907)

These non-security issues were fixed:

• Fix name of s390x specific sysctl configuration file to end with .conf
  (bsc#1026583)
• XHCI fixes (bsc#977027)
• Fixed rare race during s390x guest reboot
• Fixed various inaccuracies in cirrus vga device emulation
• Fixed cause of infrequent migration failures from bad virtio device
  state (bsc#1020928)
• Fixed graphical update errors introduced by previous security fix
  (bsc#1016779)