CVE-2016-5242

MEDIUM

Description

The 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.

References

http://www.debian.org/security/2016/dsa-3633

http://www.securityfocus.com/bid/91015

http://www.securitytracker.com/id/1036035

http://xenbits.xen.org/xsa/advisory-181.html

Details

Source: MITRE

Published: 2016-06-07

Updated: 2016-11-28

Risk Information

CVSS v2.0

Base Score: 4.7

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

Impact Score: 6.9

Exploitability Score: 3.4

Severity: MEDIUM

CVSS v3.0

Base Score: 5.6

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

Impact Score: 4

Exploitability Score: 1.1

Severity: MEDIUM