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Bug 912905 - (CVE-2013-0311) CVE-2013-0311 kernel: vhost: fix length for cross region descriptor
CVE-2013-0311 kernel: vhost: fix length for cross region descriptor
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
high Severity high
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Assigned To: Red Hat Product Security
impact=important,public=20130219,repo...
: Security
Depends On: 862265 953214 953215
Blocks: 961202
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Reported: 2013-02-19 19:37 EST by Petr Matousek
Modified: 2015-02-16 10:40 EST (History)
26 users (show)

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2013-05-09 02:14:11 EDT
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RHEL 7.3 requirements from Atomic Host:


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Description Petr Matousek 2013-02-19 19:37:08 EST
If a single descriptor crosses a region, the second chunk length should be decremented by size translated so far, instead it includes the full descriptor length. A privileged guest user could use this flaw to crash the host or, potentially, corrupt host memory.

Upstream fix:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=bd97120fc3d1a11f3124c7c9ba1d91f51829eb85
Comment 1 Petr Matousek 2013-02-19 19:49:15 EST
Statement:

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 Linux 5 and Red Hat Enterprise MRG 2.
Comment 2 errata-xmlrpc 2013-02-21 02:03:49 EST
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
Comment 3 errata-xmlrpc 2013-02-28 13:59:35 EST
This issue has been addressed in following products:

  RHEV-H and Agents for RHEL-6

Via RHSA-2013:0579 https://rhn.redhat.com/errata/RHSA-2013-0579.html
Comment 5 errata-xmlrpc 2013-05-30 14:31:59 EDT
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
Comment 6 errata-xmlrpc 2013-06-11 13:39:26 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6.3 EUS - Server Only

Via RHSA-2013:0928 https://rhn.redhat.com/errata/RHSA-2013-0928.html

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