File _patchinfo of Package patchinfo.13143

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File _patchinfo of Package patchinfo.13143

<patchinfo incident="13143">
  <issue tracker="bnc" id="1154458">VUL-0: CVE-2019-18421: xen: XSA-299 v4: Issues with restartable PV type change operations</issue>
  <issue tracker="bnc" id="1155945">EMU: VUL-0: EMBARGOED: CVE-2018-12207: xen: Machine Check Error Avoidance on Page Size Change (aka IFU issue)</issue>
  <issue tracker="bnc" id="1152497">VUL-0: EMBARGOED: CVE-2019-11135: xen:  TSX Asynchronous Abort (TAA) issue</issue>
  <issue tracker="bnc" id="1154461">VUL-0: CVE-2019-18424: xen: XSA-302 v5: passed through PCI devices may corrupt host memory after deassignment</issue>
  <issue tracker="bnc" id="1154456">VUL-0: CVE-2019-18425: xen: XSA-298 v3: missing descriptor table limit checking in x86 PV emulation</issue>
  <issue tracker="bnc" id="1154448">VUL-0: CVE-2019-18420: xen: XSA-296 v4:  VCPUOP_initialise DoS</issue>
  <issue tracker="cve" id="2018-12207"/>
  <issue tracker="cve" id="2019-11135"/>
  <issue tracker="cve" id="2019-18421"/>
  <issue tracker="cve" id="2019-18420"/>
  <issue tracker="cve" id="2019-18425"/>
  <issue tracker="cve" id="2019-18424"/>
  <packager>charlesa</packager>
  <rating>important</rating>
  <category>security</category>
  <summary>Security update for xen</summary>
  <description>This update for xen fixes the following issues:

- CVE-2018-12207: Untrusted virtual machines on Intel CPUs could exploit a race
  condition in the Instruction Fetch Unit of the Intel CPU to cause a Machine
  Exception during Page Size Change, causing the CPU core to be non-functional.
  (bsc#1155945)
- CVE-2019-11135: Aborting an asynchronous TSX operation on Intel CPUs with
  Transactional Memory support could be used to facilitate sidechannel
  information leaks out of microarchitectural buffers, similar to the
  previously described "Microarchitectural Data Sampling" attack. (bsc#1152497).
- CVE-2019-18425: 32-bit PV guest user mode could elevate its privileges to that 
  of the guest kernel. (bsc#1154456).
- CVE-2019-18421: A malicious PV guest administrator may have been able to
  escalate their privilege to that of the host. (bsc#1154458).
- CVE-2019-18420: Malicious x86 PV guests may have caused a hypervisor crash, 
  resulting in a Denial of Service (Dos). (bsc#1154448)
</description>
</patchinfo>

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