vulnwire
7.8high

CVE-2016-4440

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 M…

Published 10 y ago · modified 4 mo ago · JSON

CVSS
7.8
v3.1 · NVD
CISA KEV
No
not known exploited
EPSS
0.4%
percentile 31%
Public exploits
0
none known

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.

Exploit prediction (EPSS)

0.36% probability of exploitation in the next 30 days, higher than 31% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.17.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD2.07.2AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-264 Permissions, Privileges, and Access Controls
Technology feeds
Linux kernel (RSS, critical only)

References

  • bugzilla.redhat.com /show_bug.cgi?id=1337806 · x_refsource_CONFIRM, x_transferred
  • git.kernel.org /cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3ce424e45411cf5a13105e0386b6ecf6eeb4f · x_refsource_CONFIRM, x_transferred
  • openwall.com /lists/oss-security/2016/05/20/2 · mailing-list, x_refsource_MLIST, x_transferred
  • github.com /torvalds/linux/commit/3ce424e45411cf5a13105e0386b6ecf6eeb4f66f · x_refsource_CONFIRM, x_transferred

Sources

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