Bug 906309 (CVE-2013-0228) - CVE-2013-0228 kernel: xen: userspace alterable %ds access in xen_iret()
Summary: CVE-2013-0228 kernel: xen: userspace alterable %ds access in xen_iret()
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2013-0228
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: Embargoed906310 Embargoed906311 910848
Blocks: Embargoed906319
TreeView+ depends on / blocked
 
Reported: 2013-01-31 12:30 UTC by Petr Matousek
Modified: 2023-05-11 21:52 UTC (History)
14 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2013-08-24 13:32:37 UTC

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2013:0630 0 normal SHIPPED_LIVE Important: kernel security and bug fix update 2013-03-12 22:58:07 UTC

Description Petr Matousek 2013-01-31 12:30:16 UTC 
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.

Acknowledgements:

This issue was discovered by Andrew Jones of Red Hat.
Comment 3 Petr Matousek 2013-01-31 13:03:41 UTC 
Statement:

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 16:57:19 UTC 
Public now via:

http://permalink.gmane.org/gmane.comp.security.oss.general/9371
Comment 7 Petr Matousek 2013-02-13 16:59:38 UTC 
Created kernel tracking bugs for this issue

Affects: fedora-all [bug 910848]
Comment 8 Josh Boyer 2013-02-14 14:17:07 UTC 
Queued up for Linus' tree here:

https://git.kernel.org/?p=linux/kernel/git/konrad/xen.git;a=commitdiff;h=13d2b4d11d69a92574a55bfd985cfb0ca77aebdc
Comment 9 Fedora Update System 2013-02-24 08:37:18 UTC 
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 18:59:28 UTC 
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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