CVE-2012-3495

Impact:
Moderate
Public Date:
2012-09-05
Bugzilla:
851165: CVE-2012-3495 kernel: xen: hypercall physdev_get_free_pirq vulnerability

The MITRE CVE dictionary describes this issue as:

The physdev_get_free_pirq hypercall in arch/x86/physdev.c in Xen 4.1.x and Citrix XenServer 6.0.2 and earlier uses the return value of the get_free_pirq function as an array index without checking that the return value indicates an error, which allows guest OS users to cause a denial of service (invalid memory write and host crash) and possibly gain privileges via unspecified vectors.

Find out more about CVE-2012-3495 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

Not vulnerable.

This issue did not 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).

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 5 kernel-xen Not affected

Acknowledgements

Red Hat would like to thank the Xen project for reporting this issue. Upstream acknowledges Matthew Daley as the original reporter.

Last Modified

CVE description copyright © 2017, The MITRE Corporation

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