Bug 862900 (CVE-2012-4461) - CVE-2012-4461 kernel: kvm: invalid opcode oops on SET_SREGS with OSXSAVE bit set
Summary: CVE-2012-4461 kernel: kvm: invalid opcode oops on SET_SREGS with OSXSAVE bit set
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2012-4461
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:
Depends On: 862903 862904 878518 953234
Blocks: 862923
TreeView+ depends on / blocked
 
Reported: 2012-10-03 20:36 UTC by Petr Matousek
Modified: 2021-02-23 13:45 UTC (History)
17 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2013-05-30 14:35:20 UTC


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2013:0223 0 normal SHIPPED_LIVE Moderate: kernel security and bug fix update 2013-02-06 00:52:09 UTC
Red Hat Product Errata RHSA-2013:0882 0 normal SHIPPED_LIVE Important: kernel security and bug fix update 2013-05-30 22:29:49 UTC

Description Petr Matousek 2012-10-03 20:36:26 UTC
A flaw has been found in the way Linux kernel's KVM subsystem handled vcpu->arch.cr4 X86_CR4_OSXSAVE bit set upon guest enter. On hosts without the XSAVE feature an unprivileged local user could use this flaw to crash the system.

Acknowledgements:

Red Hat would like to thank Jon Howell for reporting this issue.

Comment 3 Petr Matousek 2012-10-03 20:42:55 UTC
Statement:

This issue did not affect the version of Linux kernel as shipped with Red Hat Enterprise Linux 5.

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

This issue did not affect the version of Linux kernel as shipped with Red Hat Enterprise MRG 2.

Comment 30 Petr Matousek 2012-11-06 18:26:33 UTC
Public now via http://article.gmane.org/gmane.comp.emulators.kvm.devel/100742

Comment 34 Fedora Update System 2012-11-22 03:52:15 UTC
kernel-3.6.7-4.fc17 has been pushed to the Fedora 17 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 35 Fedora Update System 2012-11-27 04:42:17 UTC
kernel-3.6.7-5.fc18 has been pushed to the Fedora 18 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 36 Fedora Update System 2012-11-28 11:31:32 UTC
kernel-3.6.7-4.fc16 has been pushed to the Fedora 16 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 37 errata-xmlrpc 2013-02-05 19:55:59 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2013:0223 https://rhn.redhat.com/errata/RHSA-2013-0223.html

Comment 39 errata-xmlrpc 2013-05-30 18:31:24 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6.2 EUS - Server Only

Via RHSA-2013:0882 https://rhn.redhat.com/errata/RHSA-2013-0882.html


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