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kernel: xen: VCPU timer overflow leads to PCPU deadlock and host death-by-watchdog

Published Nov 21, 2012

Description

Xen 3.4 through 4.2, and possibly earlier versions, allows local guest OS administrators to cause a denial of service (Xen infinite loop and physical CPU consumption) by setting a VCPU with an "inappropriate deadline."

Affected products

Remediation

Red Hat statement

This issue did 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.

Weaknesses (1)

References (27)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Nov 21, 2012
Updated Aug 6, 2024
Reserved Aug 21, 2012
NVD
Status Modified
Modified Jun 16, 2026
Red Hat
Severity Moderate
Public date Nov 13, 2012