CVE-2016-4480

8.4 HIGH
Published: May 18, 2016 Modified: May 06, 2026
View on NVD

Description

The guest_walk_tables function in arch/x86/mm/guest_walk.c in Xen 4.6.x and earlier does not properly handle the Page Size (PS) page table entry bit at the L4 and L3 page table levels, which might allow local guest OS users to gain privileges via a crafted mapping of memory.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://www.debian.org/security/2016/dsa-3633
Source: cve@mitre.org
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
Source: cve@mitre.org
Vendor Advisory
http://www.securityfocus.com/bid/90710
Source: cve@mitre.org
http://www.securitytracker.com/id/1035901
Source: cve@mitre.org
http://xenbits.xen.org/xsa/advisory-176.html
Source: cve@mitre.org
Vendor Advisory
http://www.debian.org/security/2016/dsa-3633
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://www.securityfocus.com/bid/90710
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.securitytracker.com/id/1035901
Source: af854a3a-2127-422b-91ae-364da2661108
http://xenbits.xen.org/xsa/advisory-176.html
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory

10 reference(s) from NVD

Quick Stats

CVSS v3 Score
8.4 / 10.0
EPSS (Exploit Probability)
0.4%
60th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-264

Affected Vendors

oracle xen

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