Bug 906309 - (CVE-2013-0228) CVE-2013-0228 kernel: xen: userspace alterable %ds access in xen_iret()
CVE-2013-0228 kernel: xen: userspace alterable %ds access in xen_iret()
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
All Linux
high Severity high
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Assigned To: Red Hat Product Security
: Security
Depends On: 906310 906311 910848
Blocks: 906319
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Reported: 2013-01-31 07:30 EST by Petr Matousek
Modified: 2015-08-19 05:19 EDT (History)
14 users (show)

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Doc Type: Bug Fix
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Last Closed: 2013-08-24 09:32:37 EDT
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Description Petr Matousek 2013-01-31 07:30:16 EST
A flaw was found in the way xen_iret() used userspace alterable %ds. An unprivileged local guest user in the 32-bit PV Xen domain could use this flaw to crash the guest or, potentially, escalate their privileges.


This issue was discovered by Andrew Jones of Red Hat.
Comment 3 Petr Matousek 2013-01-31 08:03:41 EST

This issue did affect the versions of the kernel package as shipped with Red Hat Enterprise Linux 6.

This issue did not affect Red Hat Enterprise Linux 5 and Red Hat Enterprise MRG 2.
Comment 6 Petr Matousek 2013-02-13 11:57:19 EST
Public now via:

Comment 7 Petr Matousek 2013-02-13 11:59:38 EST
Created kernel tracking bugs for this issue

Affects: fedora-all [bug 910848]
Comment 9 Fedora Update System 2013-02-24 03:37:18 EST
kernel-3.7.9-101.fc17 has been pushed to the Fedora 17 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 10 errata-xmlrpc 2013-03-12 14:59:28 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2013:0630 https://rhn.redhat.com/errata/RHSA-2013-0630.html

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