CVE Database


Impact: Moderate
Public: 2011-08-30
Bugzilla: 718882: CVE-2011-2519 kernel: xen: x86_emulate: fix SAHF emulation
IAVA: 2012-A-0020


The MITRE CVE dictionary describes this issue as:

Xen in the Linux kernel, when running a guest on a host without hardware assisted paging (HAP), allows guest users to cause a denial of service (invalid pointer dereference and hypervisor crash) via the SAHF instruction.

Find out more about CVE-2011-2519 from the MITRE CVE dictionary and NIST NVD.


This issue only affects Red Hat Enterprise Linux 5. The versions of the Linux
kernel-xen as shipped with Red Hat Enterprise Linux 4, 6, and Red Hat Enterprise MRG are not affected. This has been addressed in Red Hat Enterprise Linux 5 via

CVSS v2 metrics

Base Score: 5.2
Base Metrics: AV:A/AC:M/Au:S/C:N/I:N/A:C
Access Vector: Adjacent Network
Access Complexity: Medium
Authentication: Single Instance
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 EUS (v. 5.6 server) (kernel) RHSA-2011:1813 December 13, 2011
Red Hat Enterprise Linux version 5 (kernel) RHSA-2011:1212 September 06, 2011

External References

This page is generated automatically and has not been checked for errors or omissions.

For clarification or corrections please contact the Red Hat Security Response Team.