SB2013022206 - Input validation error in Linux kernel
Published: February 22, 2013
Security Bulletin ID
SB2013022206
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2013-0311)
The vulnerability allows a remote user to execute arbitrary code.
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.
Remediation
Install update from vendor's website.
References
- https://github.com/torvalds/linux/commit/bd97120fc3d1a11f3124c7c9ba1d91f51829eb85
- http://www.openwall.com/lists/oss-security/2013/02/20/6
- http://www.kernel.org/pub/linux/kernel/v3.x/patch-3.7.bz2
- https://bugzilla.redhat.com/show_bug.cgi?id=912905
- http://rhn.redhat.com/errata/RHSA-2013-0496.html
- http://rhn.redhat.com/errata/RHSA-2013-0579.html
- http://rhn.redhat.com/errata/RHSA-2013-0882.html
- http://rhn.redhat.com/errata/RHSA-2013-0928.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:176
- http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00018.html
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=bd97120fc3d1a11f3124c7c9ba1d91f51829eb85