File _patchinfo of Package patchinfo.7317

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File _patchinfo of Package patchinfo.7317

<patchinfo incident="7317">
  <issue id="1057493" tracker="bnc">DomU crash</issue>
  <issue id="1086107" tracker="bnc">HVM VM fails to boot on SLES11 SP4 host after xen update xen-4.4.4_28-61.23.2</issue>
  <issue id="1090820" tracker="bnc">VUL-0: EMBARGOED: CVE-2018-8897: xen: x86: mishandling of debug exceptions (XSA-260)</issue>
  <issue id="1027519" tracker="bnc">Xen: Missing upstream bug fixes</issue>
  <issue id="1072834" tracker="bnc">Xen HVM: unchecked MSR access error: RDMSR from 0xc90 at rIP: 0xffffffff93061456 (native_read_msr+0x6/0x30)</issue>
  <issue id="1083292" tracker="bnc">VUL-0: CVE-2018-7550 qemu, kvm: i386:  multiboot OOB access while loading kernel image</issue>
  <issue id="1089152" tracker="bnc">VUL-0: CVE-2018-10472: xen: Information leak via crafted user-supplied CDROM (XSA-258)</issue>
  <issue id="1089635" tracker="bnc">VUL-0: CVE-2018-10471: xen: x86: PV guest may crash Xen with XPTI (XSA-259)</issue>
  <issue id="1090822" tracker="bnc">VUL-0: EMBARGOED: xen: x86 vHPET interrupt injection errors (XSA-261)</issue>
  <issue id="1090823" tracker="bnc">VUL-0: EMBARGOED: xen: qemu may drive Xen into unbounded loop (XSA-262)</issue>
  <issue id="2018-10471" tracker="cve" />
  <issue id="2018-10472" tracker="cve" />
  <issue id="2018-7550" tracker="cve" />
  <issue id="2018-8897" 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-2018-8897: Prevent mishandling of debug exceptions on x86 (XSA-260, bsc#1090820)
- Handle HPET timers in IO-APIC mode correctly to prevent malicious or buggy
  HVM guests from causing a hypervisor crash or potentially privilege
  escalation/information leaks (XSA-261, bsc#1090822)
- Prevent unbounded loop, induced by qemu allowing an attacker to permanently
  keep a physical CPU core busy (XSA-262, bsc#1090823)
- CVE-2018-10472: x86 HVM guest OS users (in certain configurations) were able
  to read arbitrary dom0 files via QMP live insertion of a CDROM, in conjunction
  with specifying the target file as the backing file of a snapshot
  (bsc#1089152).
- CVE-2018-10471: x86 PV guest OS users were able to cause a denial of service
  (out-of-bounds zero write and hypervisor crash) via unexpected INT 80
  processing, because of an incorrect fix for CVE-2017-5754 (bsc#1089635).
- CVE-2018-7550: The load_multiboot function allowed local guest OS users to
  execute arbitrary code on the host via a mh_load_end_addr value greater than
  mh_bss_end_addr, which triggers an out-of-bounds read or write memory access
  (bsc#1083292).

This non-security issue was fixed:

- bsc#1072834: Prevent unchecked MSR access error
- bsc#1057493: Prevent DomU crashes
- bsc#1086107: Fixed problems with backports for XSA-246 and XSA-247
  </description>
  <summary>Security update for xen</summary>
</patchinfo>

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