CVE-2009-2287: Null Pointer Dereference
First published: Wed Jul 01 2009(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | >=2.6.0<2.6.30 | |
| Canonical Ubuntu Linux | =9.04 | |
| Canonical Ubuntu Linux | =8.10 | |
| Canonical Ubuntu Linux | =8.04 | |
| Canonical Ubuntu Linux | =6.06 | |
| Debian Debian Linux | =5.0 | |
| Debian Debian Linux | =4.0 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- http://sourceforge.net/tracker/?func=detail&atid=893831&aid=2687641&group_id=180599
- http://www.openwall.com/lists/oss-security/2009/06/30/1
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=59839dfff5eabca01cc4e20b45797a60a80af8cb
- http://git.kernel.org/?p=linux/kernel/git/stable/stable-queue.git;a=blob;f=queue-2.6.30/kvm-x86-check-for-cr3-validity-in-ioctl_set_sregs.patch;h=b48a47dad2cf76358b327368f80c0805e6370c68;hb=e7c45b24f298b5d9efd7d401150f64a1b51aaac4
- http://secunia.com/advisories/35675
- http://www.ubuntu.com/usn/usn-807-1
- http://secunia.com/advisories/36054
- http://secunia.com/advisories/36045
- http://www.debian.org/security/2009/dsa-1845
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:198
- http://git.kernel.org/?p=linux/kernel/git/stable/stable-queue.git%3Ba=blob%3Bf=queue-2.6.30/kvm-x86-check-for-cr3-validity-in-ioctl_set_sregs.patch%3Bh=b48a47dad2cf76358b327368f80c0805e6370c68%3Bhb=e7c45b24f298b5d9efd7d401150f64a1b51aaac4
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=59839dfff5eabca01cc4e20b45797a60a80af8cb
- collector/nvd-historical
- collector/nvd-index
- collector/nvd-api
- agent/severity
- agent/references
- agent/author
- agent/weakness
- agent/type
- agent/event
- agent/description
- agent/remedy
- agent/last-modified-date
- agent/softwarecombine
- agent/first-publish-date
- agent/tags
- collector/mitre-cve
- source/MITRE
- vendor/linux
- canonical/linux linux kernel
- version/linux linux kernel/2.6.0
- vendor/canonical
- canonical/canonical ubuntu linux
- version/canonical ubuntu linux/9.04
- version/canonical ubuntu linux/8.10
- version/canonical ubuntu linux/8.04
- version/canonical ubuntu linux/6.06
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/5.0
- version/debian debian linux/4.0