Vulnerability Monitor

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CVE-2011-2519

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.

Security Impact Summary

CVE-2011-2519 is a security vulnerability that . Impacting 4 products from xen, from redhat, from redhat and 1 other, organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2013, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.

Published

2013-12-27T01:55:05.190

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 5.5 (MEDIUM)

CVSSv2 Vector

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

Exploitability Score

5.1

Impact Score

6.9

Weaknesses

Type: Primary
CWE-476

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	xen	xen	< 3.3.0	Yes
Operating System	redhat	enterprise_linux_desktop	5.0	Yes
Operating System	redhat	enterprise_linux_server	5.0	Yes
Operating System	redhat	enterprise_linux_workstation	5.0	Yes

References

http://rhn.redhat.com/errata/RHSA-2011-1212.html Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2011/08/30/1 Mailing List, Third Party Advisory ([email protected])
http://xenbits.xen.org/hg/xen-3.1-testing.hg/rev/15644 Patch, Vendor Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=718882 Issue Tracking, Third Party Advisory ([email protected])
http://rhn.redhat.com/errata/RHSA-2011-1212.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2011/08/30/1 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://xenbits.xen.org/hg/xen-3.1-testing.hg/rev/15644 Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=718882 Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For xen's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.