CVE-2016-5242

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Summary

CVECVE-2016-5242
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2016-06-07 14:06:17 UTC
Updated2026-05-06 22:30:45 UTC
DescriptionThe p2m_teardown function in arch/arm/p2m.c in Xen 4.4.x through 4.6.x allows local guest OS users with access to the driver domain to cause a denial of service (NULL pointer dereference and host OS crash) by creating concurrent domains and holding references to them, related to VMID exhaustion.

Risk And Classification

Primary CVSS: v3.0 5.6 MEDIUM from [email protected]

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

Problem Types: NVD-CWE-Other | n/a

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary5.6MEDIUMCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H
2.0[email protected]Primary4.7AV:L/AC:M/Au:N/C:N/I:N/A:C

CVSS v3.0 Breakdown

Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
None
Availability
High

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

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete

AV:L/AC:M/Au:N/C:N/I:N/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Xen Xen 4.4.0 All All All
Operating System Xen Xen 4.4.0 rc1 All All
Operating System Xen Xen 4.4.1 All All All
Operating System Xen Xen 4.4.2 All All All
Operating System Xen Xen 4.4.3 All All All
Operating System Xen Xen 4.4.4 All All All
Operating System Xen Xen 4.5.0 All All All
Operating System Xen Xen 4.5.1 All All All
Operating System Xen Xen 4.5.2 All All All
Operating System Xen Xen 4.5.3 All All All
Operating System Xen Xen 4.6.0 All All All
Operating System Xen Xen 4.6.1 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Xen VMID Resource Exhaustion Bug Lets Local Domain Drivers Cause Denial of Service Conditions on the Host System - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com
XSA-181 - Xen Security Advisories af854a3a-2127-422b-91ae-364da2661108 xenbits.xen.org Vendor Advisory
Debian -- Security Information -- DSA-3633-1 xen af854a3a-2127-422b-91ae-364da2661108 www.debian.org
Xen VMID Exhaustion Denial of Service Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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