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MEDIUM

kernel: xen: Excessive time to disable caching with HVM guests with PCI passthrough

Published Aug 28, 2013

Description

The vmx_set_uc_mode function in Xen 3.3 through 4.3, when disabling caches, allows local HVM guests with access to memory mapped I/O regions to cause a denial of service (CPU consumption and possibly hypervisor or guest kernel panic) via a crafted GFN range.

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 the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG as we did not have support for Xen hypervisor.

References (9)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Aug 28, 2013
Updated Aug 6, 2024
Reserved Feb 19, 2013
NVD
Status Modified
Modified Jun 16, 2026
Red Hat
Severity Moderate
Public date Jul 24, 2013