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Secunia Security Advisory 37357

Secunia Security Advisory 37357
Posted Nov 17, 2009
Authored by Secunia | Site secunia.com

Secunia Security Advisory - A vulnerability has been reported in the Linux Kernel, which can be exploited by malicious, local users to cause a DoS (Denial of Service) and potentially gain escalated privileges.

tags | advisory, denial of service, kernel, local
systems | linux
SHA-256 | 1a6a878512a6930d632134eec73d30f8ee4cd5cc0bbc30801fe18c7f72f14c59

Secunia Security Advisory 37357

Change Mirror Download
----------------------------------------------------------------------

Do you have VARM strategy implemented?

(Vulnerability Assessment Remediation Management)

If not, then implement it through the most reliable vulnerability
intelligence source on the market.

Implement it through Secunia.

For more information visit:
http://secunia.com/advisories/business_solutions/

Alternatively request a call from a Secunia representative today to
discuss how we can help you with our capabilities contact us at:
sales@secunia.com

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TITLE:
Linux Kernel KVM MCE "KVM_X86_SETUP_MCE" Buffer Overflow

SECUNIA ADVISORY ID:
SA37357

VERIFY ADVISORY:
http://secunia.com/advisories/37357/

DESCRIPTION:
A vulnerability has been reported in the Linux Kernel, which can be
exploited by malicious, local users to cause a DoS (Denial of
Service) and potentially gain escalated privileges.

The vulnerability is caused due to an error within the
"kvm_vcpu_ioctl_x86_setup_mce()" function in arch/x86/kvm/x86.c. This
can be exploited to corrupt kernel memory by e.g. sending a specially
crafted "KVM_X86_SETUP_MCE" IOCTL.

SOLUTION:
Fixed in version 2.6.32.-rc7.

PROVIDED AND/OR DISCOVERED BY:
Disclosed in a GIT commit.

ORIGINAL ADVISORY:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=a9e38c3e01ad242fe2a625354cf065c34b01e3aa

----------------------------------------------------------------------

About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/advisories/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/advisories/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

----------------------------------------------------------------------

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