Gentoo Websites Logo
Go to: Gentoo Home Documentation Forums Lists Bugs Planet Store Wiki Get Gentoo!
Bug 286104 (CVE-2009-3290) - Kernel: KVM: x86: Disallow hypercalls for guest callers in rings > 0 (CVE-2009-3290)
Summary: Kernel: KVM: x86: Disallow hypercalls for guest callers in rings > 0 (CVE-200...
Status: RESOLVED FIXED
Alias: CVE-2009-3290
Product: Gentoo Security
Classification: Unclassified
Component: Kernel (show other bugs)
Hardware: All Linux
: High normal (vote)
Assignee: Gentoo Security
URL: http://git.kernel.org/?p=linux/kernel...
Whiteboard: [linux <2.6.31]
Keywords:
Depends on:
Blocks:
 
Reported: 2009-09-23 15:36 UTC by Alex Legler (RETIRED)
Modified: 2013-09-15 18:40 UTC (History)
2 users (show)

See Also:
Package list:
Runtime testing required: ---

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description Alex Legler (RETIRED) archtester gentoo-dev Security 2009-09-23 15:36:16 UTC 
CVE-2009-3290 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-3290):
  The kvm_emulate_hypercall function in arch/x86/kvm/x86.c in KVM in
  the Linux kernel 2.6.25-rc1, and other versions before 2.6.31, when
  running on x86 systems, does not prevent access to MMU hypercalls
  from ring 0, which allows local guest OS users to cause a denial of
  service (guest kernel crash) and read guest kernel memory via
  unspecified "random addresses."