CVE-2016-3961

MEDIUM

Xen & Linux Kernel <4.5.x - DoS

Title source: llm

Description

Xen and the Linux kernel through 4.5.x do not properly suppress hugetlbfs support in x86 PV guests, which allows local PV guest OS users to cause a denial of service (guest OS crash) by attempting to access a hugetlbfs mapped area.

References (14)

[Third Party Advisory, VDB Entry] http://www.securitytracker.com/id/1035569

[Third Party Advisory] http://www.ubuntu.com/usn/USN-3001-1

[Third Party Advisory] http://www.ubuntu.com/usn/USN-3002-1

[Third Party Advisory] http://www.ubuntu.com/usn/USN-3003-1

[Third Party Advisory] http://www.ubuntu.com/usn/USN-3004-1

[Third Party Advisory] http://www.ubuntu.com/usn/USN-3005-1

[Third Party Advisory] http://www.ubuntu.com/usn/USN-3006-1

[Third Party Advisory] http://www.ubuntu.com/usn/USN-3007-1

[Vendor Advisory] http://www.ubuntu.com/usn/USN-3049-1

[Vendor Advisory] http://www.ubuntu.com/usn/USN-3050-1

[Vendor Advisory] http://xenbits.xen.org/xsa/advisory-174.html

[Patch] http://xenbits.xen.org/xsa/xsa174.patch

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/86068

[Third Party Advisory] http://www.debian.org/security/2016/dsa-3607

Scores

CVSS v3 5.5

EPSS 0.0013

EPSS Percentile 31.7%

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-20

Status draft

Affected Products (4)

canonical/ubuntu_linux

xen/xen < 4.5.3

Timeline

Published Apr 15, 2016

Tracked Since Feb 18, 2026