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CVE
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CVE-2009-2287Date: (C)2009-07-01   (M)2024-02-22


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 and Metrics +CVSS Score and Metrics -

CVSS V2 Severity:
CVSS Score : 4.9
Exploit Score: 3.9
Impact Score: 6.9
 
CVSS V2 Metrics:
Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality: NONE
Integrity: NONE
Availability: COMPLETE
  
Reference:
SECUNIA-35675
SECUNIA-36045
SECUNIA-36054
DSA-1845
MDVSA-2010:198
USN-807-1
http://www.openwall.com/lists/oss-security/2009/06/30/1
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
http://sourceforge.net/tracker/?func=detail&atid=893831&aid=2687641&group_id=180599

CPE    6
cpe:/o:debian:debian_linux:4.0
cpe:/o:debian:debian_linux:5.0
cpe:/o:linux:linux_kernel
cpe:/o:canonical:ubuntu_linux:9.04
...
CWE    1
CWE-476
OVAL    7
oval:org.secpod.oval:def:600435
oval:org.mitre.oval:def:7263
oval:org.secpod.oval:def:301142
oval:org.secpod.oval:def:301173
...

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