Vulnerability Description
The kvm_arch_vcpu_ioctl_set_sregs function in the KVM in Linux kernel 2.6 before 2.6.30, when running on x86 systems, does not validate the page table root in a KVM_SET_SREGS call, which allows local users to cause a denial of service (crash or hang) via a crafted cr3 value, which triggers a NULL pointer dereference in the gfn_to_rmap function.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 2.6.0, < 2.6.30 |
| Canonical | Ubuntu Linux | 6.06 |
| Debian | Debian Linux | 4.0 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/?p=linux/kernel/git/stable/stable-queue.git%3Ba=blob%3Bf=q
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%
- http://secunia.com/advisories/35675Broken Link
- http://secunia.com/advisories/36045Broken Link
- http://secunia.com/advisories/36054Broken Link
- http://sourceforge.net/tracker/?func=detail&atid=893831&aid=2687641&group_id=180Third Party Advisory
- http://www.debian.org/security/2009/dsa-1845Third Party Advisory
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:198Broken Link
- http://www.openwall.com/lists/oss-security/2009/06/30/1Mailing ListPatchThird Party Advisory
- http://www.ubuntu.com/usn/usn-807-1Third Party Advisory
- http://git.kernel.org/?p=linux/kernel/git/stable/stable-queue.git%3Ba=blob%3Bf=q
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%
- http://secunia.com/advisories/35675Broken Link
- http://secunia.com/advisories/36045Broken Link
- http://secunia.com/advisories/36054Broken Link
FAQ
What is CVE-2009-2287?
CVE-2009-2287 is a vulnerability with a CVSS score of 4.9 (MEDIUM). The kvm_arch_vcpu_ioctl_set_sregs function in the KVM in Linux kernel 2.6 before 2.6.30, when running on x86 systems, does not validate the page table root in a KVM_SET_SREGS call, which allows local ...
How severe is CVE-2009-2287?
CVE-2009-2287 has been rated MEDIUM with a CVSS base score of 4.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2009-2287?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Canonical Ubuntu Linux, Debian Debian Linux.