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CVE Database

CVE-2010-4255

Impact: Moderate
Public: 2010-11-29
Bugzilla: 658155: CVE-2010-4255 xen: 64-bit PV xen guest can crash host by accessing hypervisor per-domain memory area
IAVA: 2011-A-0147

Details

The MITRE CVE dictionary describes this issue as:

The fixup_page_fault function in arch/x86/traps.c in Xen 4.0.1 and earlier on 64-bit platforms, when paravirtualization is enabled, does not verify that kernel mode is used to call the handle_gdt_ldt_mapping_fault function, which allows guest OS users to cause a denial of service (host OS BUG_ON) via a crafted memory access.

Find out more about CVE-2010-4255 from the MITRE CVE dictionary and NIST NVD.

CVSS v2 metrics

Base Score: 6.1
Base Metrics: AV:A/AC:L/Au:N/C:N/I:N/A:C
Access Vector: Adjacent Network
Access Complexity: Low
Authentication: None
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-2011:0017 January 13, 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.