CVE-2016-8630

medium

Description

The x86_decode_insn function in arch/x86/kvm/emulate.c in the Linux kernel before 4.8.7, when KVM is enabled, allows local users to cause a denial of service (host OS crash) via a certain use of a ModR/M byte in an undefined instruction.

References

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.7

https://github.com/torvalds/linux/commit/d9092f52d7e61dd1557f2db2400ddb430e85937e

http://www.openwall.com/lists/oss-security/2016/11/22/3

https://bugzilla.redhat.com/show_bug.cgi?id=1393350

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d9092f52d7e61dd1557f2db2400ddb430e85937e

http://www.securityfocus.com/bid/94459

http://rhn.redhat.com/errata/RHSA-2017-0387.html

http://rhn.redhat.com/errata/RHSA-2017-0386.html

Details

Source: MITRE

Published: 2016-11-28

Updated: 2023-02-12

Type: CWE-284

Risk Information

CVSS v2

Base Score: 4.9

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C

Impact Score: 6.9

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM