Upstream information

CVE-2016-4440 at MITRE

Description

arch/x86/kvm/vmx.c in the Linux kernel through 4.6.3 mishandles the APICv on/off state, which allows guest OS users to obtain direct APIC MSR access on the host OS, and consequently cause a denial of service (host OS crash) or possibly execute arbitrary code on the host OS, via x2APIC mode.

SUSE information

CVSS v2 Scores
  National Vulnerability Database SUSE
Base Score 7.15 5.00
Vector AV:L/AC:L/Au:N/C:C/I:C/A:C AV:L/AC:H/Au:S/C:P/I:P/A:C
Access Vector Local Local
Access Complexity Low High
Authentication None Single
Confidentiality Impact Complete Partial
Integrity Impact Complete Partial
Availability Impact Complete Complete
CVSS v3 Scores
  National Vulnerability Database
Base Score 7.8
Vector AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Access Vector Local
Access Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
SUSE Bugzilla entry: 980829 [RESOLVED / UPSTREAM]

No SUSE Security Announcements cross referenced.