Public Date:
870101: CVE-2012-4537 kernel: xen: Memory mapping failure can crash Xen

The MITRE CVE dictionary describes this issue as:

Xen 3.4 through 4.2, and possibly earlier versions, does not properly synchronize the p2m and m2p tables when the set_p2m_entry function fails, which allows local HVM guest OS administrators to cause a denial of service (memory consumption and assertion failure), aka "Memory mapping failure DoS vulnerability."

Find out more about CVE-2012-4537 from the MITRE CVE dictionary dictionary and NIST NVD.


This issue did affect the versions of the kernel-xen package as shipped with Red Hat Enterprise Linux 5. This issue did not affect Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG as we did not have support for Xen hypervisor.

CVSS v2 metrics

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

Base Score 5.5
Base Metrics AV:A/AC:L/Au:S/C:N/I:N/A:C
Access Vector Adjacent Network
Access Complexity Low
Authentication Single
Confidentiality Impact None
Integrity Impact None
Availability Impact Complete

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux version 5 (kernel) RHSA-2012:1540 2012-12-04

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 5 kernel-xen Affected


Red Hat would like to thank the Xen project for reporting this issue.