CVE-2016-8630

MEDIUM

Linux kernel <4.8.7 - DoS

Title source: llm

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 (8)

[Vendor Advisory] http://rhn.redhat.com/errata/RHSA-2017-0386.html

[Vendor Advisory] http://rhn.redhat.com/errata/RHSA-2017-0387.html

[Issue Tracking, Patch, Vendor Advisory] http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d9092f52d7e61dd1557f2db2400ddb430e85937e

[Release Notes] http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.7

[Mailing List, Third Party Advisory] http://www.openwall.com/lists/oss-security/2016/11/22/3

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/94459

[Issue Tracking] https://bugzilla.redhat.com/show_bug.cgi?id=1393350

[Issue Tracking, Patch, Third Party Advisory] https://github.com/torvalds/linux/commit/d9092f52d7e61dd1557f2db2400ddb430e85937e

View Patch ZIP pw:eip

Scores

CVSS v3 5.5

EPSS 0.0003

EPSS Percentile 8.4%

Attack Vector LOCAL

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

Classification

CWE

CWE-284 CWE-476

Status published

Affected Products (2)

linux/linux_kernel < 4.8.6

n/a/n/a

Timeline

Published Nov 28, 2016

Tracked Since Feb 18, 2026