Bug 1075499 - (CVE-2014-2599) CVE-2014-2599 xen: HVMOP_set_mem_access is not preemptible
CVE-2014-2599 xen: HVMOP_set_mem_access is not preemptible
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
: Security
Depends On: 1080425
Blocks: 1075501
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Reported: 2014-03-12 05:44 EDT by Petr Matousek
Modified: 2014-03-25 12:38 EDT (History)
5 users (show)

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Doc Type: Bug Fix
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Last Closed: 2014-03-12 05:46:55 EDT
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Description Petr Matousek 2014-03-12 05:44:13 EDT
Processing of the HVMOP_set_mem_access HVM control operations does not check the size of its input and can tie up a physical CPU for extended periods of time.

A malicious administrator of a domain privileged with regard to an HVM guest can cause Xen to become unresponsive leading to a Denial of Service.


Red Hat would like to thank the Xen project for reporting this issue.
Comment 1 Petr Matousek 2014-03-12 05:45:46 EDT

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 2 as we did not have support for Xen hypervisor.
Comment 3 Petr Matousek 2014-03-25 08:20:37 EDT
Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1080425]

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