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MEDIUM

kernel: xen: nested HVM host crash / OOM condition

Published Mar 7, 2013

Description

The do_hvm_op function in xen/arch/x86/hvm/hvm.c in Xen 4.2.x on the x86_32 platform does not prevent HVM_PARAM_NESTEDHVM (aka nested virtualization) operations, which allows guest OS users to cause a denial of service (long-duration page mappings and host OS crash) by leveraging administrative access to an HVM guest in a domain with a large number of VCPUs.

Affected products

Remediation

Red Hat 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.

Metrics

Weaknesses (1)

References (8)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Mar 7, 2013
Updated Aug 6, 2024
Reserved Dec 6, 2012
NVD
Status Modified
Modified Jun 16, 2026
Red Hat
Severity Moderate
Public date Jan 22, 2013