CVE-2016-3961

MEDIUM

Xen < 4.5.3 and Linux Kernel through 4.5.x - Denial of Service via hugetlbfs Access in x86 PV Guests

Title source: llm
STIX 2.1

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)

Core 14
Core References
Patch x_refsource_confirm
http://xenbits.xen.org/xsa/xsa174.patch
Third Party Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-3006-1
Third Party Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-3004-1
Third Party Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-3001-1
Vendor Advisory x_refsource_confirm
http://xenbits.xen.org/xsa/advisory-174.html
Third Party Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-3005-1
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1035569
Vendor Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-3049-1
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2016/dsa-3607
Third Party Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-3002-1
Vendor Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-3050-1
Third Party Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-3007-1
Third Party Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-3003-1
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/86068

Scores

CVSS v3 5.5
EPSS 0.0013
EPSS Percentile 31.3%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-20
Status published
Products (4)
canonical/ubuntu_linux 14.04
canonical/ubuntu_linux 15.10
canonical/ubuntu_linux 16.04
xen/xen < 4.5.3
Published Apr 15, 2016
Tracked Since Feb 18, 2026