Bug 896038 (CVE-2013-0190) - CVE-2013-0190 kernel: stack corruption in xen_failsafe_callback()
Summary: CVE-2013-0190 kernel: stack corruption in xen_failsafe_callback()
Status: CLOSED ERRATA
Alias: CVE-2013-0190
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: impact=moderate,public=20130116,repor...
Keywords: Security
Depends On: 896049 896050 896051
Blocks: 896056
TreeView+ depends on / blocked
 
Reported: 2013-01-16 14:18 UTC by Petr Matousek
Modified: 2019-06-08 19:23 UTC (History)
4 users (show)

(edit)
Clone Of:
(edit)
Last Closed: 2013-08-24 13:02:28 UTC


Attachments (Terms of Use)
Upstream proposed patch (2.29 KB, patch)
2013-01-16 14:22 UTC, Petr Matousek
no flags Details | Diff


External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2013:0496 normal SHIPPED_LIVE Important: Red Hat Enterprise Linux 6 kernel update 2013-02-20 21:40:54 UTC

Description Petr Matousek 2013-01-16 14:18:09 UTC
A flaw was found in the way xen_failsafe_callback() handled failed iret,
which causes the stack pointer to be wrong when entering the
iret_exc error path. An unprivileged local guest user in the 32-bit PV
Xen domain could use this flaw to crash the guest.

References:
http://www.openwall.com/lists/oss-security/2013/01/16/6

Acknowledgements:

Red Hat would like to thank the Andrew Cooper of Citrix for reporting this issue.

Comment 1 Petr Matousek 2013-01-16 14:22:55 UTC
Created attachment 679616 [details]
Upstream proposed patch

Comment 3 Petr Matousek 2013-01-16 14:28:33 UTC
Created kernel tracking bugs for this issue

Affects: fedora-all [bug 896051]

Comment 4 Petr Matousek 2013-01-16 14:39:45 UTC
Statement:

This issue did not affect Red Hat Enterprise Linux 5 and Red Hat Enterprise MRG 2.

Comment 5 Andrew Jones 2013-01-16 17:42:17 UTC
I'm brewing a build with the proposed patch:

https://brewweb.devel.redhat.com/taskinfo?taskID=5278913

and taking a stab at writing a reproducer.

Comment 6 Fedora Update System 2013-01-18 20:43:52 UTC
kernel-3.7.2-204.fc18 has been pushed to the Fedora 18 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 17 Fedora Update System 2013-01-24 22:39:17 UTC
kernel-3.7.3-101.fc17 has been pushed to the Fedora 17 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 19 errata-xmlrpc 2013-02-21 07:02:22 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2013:0496 https://rhn.redhat.com/errata/RHSA-2013-0496.html


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