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CVE-2009-2287

Date: July 1, 2009

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.

Language: C

Severity Score

Related Resources (13)

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=59839dfff5eabca01cc4e20b45797a60a80af8cb
http://www.mandriva.com/security/advisories?name=MDVSA-2010:198
http://www.debian.org/security/2009/dsa-1845
http://www.ubuntu.com/usn/usn-807-1
http://secunia.com/advisories/36054
http://www.openwall.com/lists/oss-security/2009/06/30/1
http://secunia.com/advisories/36045
https://nvd.nist.gov/vuln/detail/CVE-2009-2287
https://people.canonical.com/~ubuntu-security/cve/CVE-2009-2287
http://secunia.com/advisories/35675
http://sourceforge.net/tracker/?func=detail&atid=893831&aid=2687641&group_id=180599
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
https://www.mend.io/vulnerability-database/CVE-2009-2287

Severity Score

Weakness Type (CWE)

Improper Input Validation

CWE-20

NULL Pointer Dereference

CWE-476

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): COMPLETE
Additional information:

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