National Cyber Awareness System

Vulnerability Summary for CVE-2013-0311

Overview

The translate_desc function in drivers/vhost/vhost.c in the Linux kernel before 3.7 does not properly handle cross-region descriptors, which allows guest OS users to obtain host OS privileges by leveraging KVM guest OS privileges.

Description

Per https://access.redhat.com/security/cve/CVE-2013-0311 "This issue did affect the version of Linux kernel as shipped with Red Hat Enterprise Linux 6."

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

References to Advisories, Solutions, and Tools

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External Source: CONFIRM

Name: http://www.kernel.org/pub/linux/kernel/v3.x/patch-3.7.bz2

Type: Patch Information

Hyperlink:http://www.kernel.org/pub/linux/kernel/v3.x/patch-3.7.bz2

External Source: CONFIRM

Name: https://github.com/torvalds/linux/commit/bd97120fc3d1a11f3124c7c9ba1d91f51829eb85

Hyperlink:https://github.com/torvalds/linux/commit/bd97120fc3d1a11f3124c7c9ba1d91f51829eb85

External Source: CONFIRM

Name: https://bugzilla.redhat.com/show_bug.cgi?id=912905

Hyperlink:https://bugzilla.redhat.com/show_bug.cgi?id=912905

External Source: MLIST

Name: [oss-security] 20130219 Re: CVE request -- Linux kernel: vhost: fix length for cross region descriptor

Hyperlink:http://www.openwall.com/lists/oss-security/2013/02/20/6

External Source: REDHAT

Name: RHSA-2013:0579

Hyperlink:http://rhn.redhat.com/errata/RHSA-2013-0579.html

External Source: REDHAT

Name: RHSA-2013:0496

Hyperlink:http://rhn.redhat.com/errata/RHSA-2013-0496.html

External Source: CONFIRM

Name: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=bd97120fc3d1a11f3124c7c9ba1d91f51829eb85

Hyperlink:http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=bd97120fc3d1a11f3124c7c9ba1d91f51829eb85