CVE-2016-6258

HIGH

Xen <= 4.7.x - Authenticated Privilege Escalation via PV Pagetable Entry Update

Title source: llm
STIX 2.1

Description

The PV pagetable code in arch/x86/mm.c in Xen 4.7.x and earlier allows local 32-bit PV guest OS administrators to gain host OS privileges by leveraging fast-paths for updating pagetable entries.

References (10)

Core 10
Core References
Mitigation, Patch, Vendor Advisory x_refsource_confirm
http://xenbits.xen.org/xsa/advisory-182.html
Vendor Advisory x_refsource_confirm
http://support.citrix.com/article/CTX214954
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201611-09
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2016/dsa-3633
Third Party Advisory vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1036446
Third Party Advisory vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/92131

Scores

CVSS v3 8.8
EPSS 0.0011
EPSS Percentile 29.3%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Details

CWE
CWE-284
Status published
Products (33)
citrix/xenserver 6.0
citrix/xenserver 6.0.2
citrix/xenserver 6.1
citrix/xenserver 6.2.0 sp1
citrix/xenserver 6.5.0 sp1
citrix/xenserver 7.0
xen/xen 3.4.0
xen/xen 3.4.2
xen/xen 3.4.3
xen/xen 3.4.4
... and 23 more
Published Aug 02, 2016
Tracked Since Feb 18, 2026