CVE Database


Impact: Important
Public: 2011-05-09
Bugzilla: 696927: CVE-2011-1583 CVE-2011-3262 xen: insufficiencies in pv kernel image validation


The MITRE CVE dictionary describes this issue as:

Multiple integer overflows in tools/libxc/xc_dom_bzimageloader.c in Xen 3.2, 3.3, 4.0, and 4.1 allow local users to cause a denial of service and possibly execute arbitrary code via a crafted paravirtualised guest kernel image that triggers (1) a buffer overflow during a decompression loop or (2) an out-of-bounds read in the loader involving unspecified length fields.

Find out more about CVE-2011-1583 from the MITRE CVE dictionary and NIST NVD.


This issue did not affect the versions of the Xen package as shipped with Red Hat Enterprise Linux 4 and 6. This has been addressed in Red Hat Enterprise Linux 5 via

CVSS v2 metrics

Base Score: 6.0
Base Metrics: AV:L/AC:H/Au:S/C:C/I:C/A:C
Access Vector: Local
Access Complexity: High
Authentication: Single Instance
Confidentiality Impact: Complete
Integrity Impact: Complete
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
RHEL Desktop Multi OS version 5 (xen) RHSA-2011:0496 May 09, 2011
Red Hat Enterprise Linux version 5 (xen) RHSA-2011:0496 May 09, 2011

External References

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