CVE-2016-5242

Severity

47%

Complexity

34%

Confidentiality

115%

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.

CWE-476: NULL Pointer Dereference

CVSS 3.0 Base Score 5.6. CVSS Attack Vector: local. CVSS Attack Complexity: high. CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H).

CVSS 2.0 Base Score 4.7. CVSS Attack Vector: local. CVSS Attack Complexity: medium. CVSS Vector: (AV:L/AC:M/Au:N/C:N/I:N/A:C).

Overview

Type

Xen

First reported 8 years ago

2016-06-07 14:06:00

Last updated 8 years ago

2016-11-28 20:23:00

Affected Software

Xen Xen 4.4.0

4.4.0

Xen 4.4.0 release candidate 1

4.4.0

Xen Xen 4.4.1

4.4.1

Xen Xen 4.4.2

4.4.2

Xen Xen 4.4.3

4.4.3

Xen 4.4.4

4.4.4

Xen Xen 4.5.0

4.5.0

Xen Xen 4.5.1

4.5.1

Xen Xen 4.5.2

4.5.2

Xen 4.5.3

4.5.3

Xen Xen 4.6.0

4.6.0

Xen Xen 4.6.1

4.6.1

References

DSA-3633

91015

1036035

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

Vendor Advisory

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