File _patchinfo of Package patchinfo.4216

<patchinfo incident="4216">
  <issue id="1012651" tracker="bnc">VUL-0: CVE-2016-9932: xen: x86 CMPXCHG8B emulation fails to ignore operand size override (XSA-200)</issue>
  <issue id="1023004" tracker="bnc">VUL-0: CVE-2017-2615: kvm: qemu: display: cirrus: oob access while doing bitblt copy backward mode [XSA-208]</issue>
  <issue id="1024834" tracker="bnc">VUL-0: EMBARGOED: CVE-2017-2620: xen: cirrus_bitblt_cputovideo does not check if memory region is safe (XSA-209)</issue>
  <issue id="1015169" tracker="bnc">VUL-0: CVE-2016-9921, CVE-2016-9922: xen: qemu: display: cirrus_vga: a divide by zero in cirrus_do_copy</issue>
  <issue id="1016340" tracker="bnc">VUL-0: CVE-2016-10013: xen: x86: Mishandling of SYSCALL singlestep during emulation (XSA-204)</issue>
  <issue id="1014300" tracker="bnc">VUL-0: CVE-2016-10025: xen: x86: missing NULL pointer check in VMFUNC emulation (XSA-203)</issue>
  <issue id="1000195" tracker="bnc">SLES 11 SP3 with XEN kernel stop booting with Panic on CPU0</issue>
  <issue id="1022871" tracker="bnc">VUL-0: xen: memory leak when destroying guest without PT devices (XSA-207)</issue>
  <issue id="1005028" tracker="bnc">Can't build Xen RPMs from Sources</issue>
  <issue id="1002496" tracker="bnc">Adding support for reloading clvm in block-dmmd</issue>
  <issue id="1014298" tracker="bnc">VUL-0: CVE-2016-10024: xen: x86 PV guests may be able to mask interrupts (XSA-202)</issue>
  <issue id="2017-2620" tracker="cve" />
  <issue id="2017-2615" tracker="cve" />
  <issue id="2016-9921" tracker="cve" />
  <issue id="2016-9922" tracker="cve" />
  <category>security</category>
  <rating>important</rating>
  <packager>charlesa</packager>
  <description>
This update for xen fixes several issues.

These security issues were fixed:

- 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#1024834).
- 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).
- A malicious guest could have, by frequently rebooting over extended periods of time, run the host system out of memory, resulting in a Denial of Service (DoS) (bsc#1022871)
- 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#1015169

These non-security issues were fixed:

- bsc#1000195: Prevent panic on CPU0 while booting on SLES 11 SP3 
- bsc#1002496: Added support for reloading clvm in block-dmmd block-dmmd
- bsc#1005028: Fixed building Xen RPMs from Sources
</description>
  <summary>Security update for xen</summary>
</patchinfo>