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    CVE-2009-2287

    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.

    Published:Mar 15, 2009
    Last Modified:Apr 23, 2026
    EPS:Jul 1, 2009
    EPSS Score:0.0006
    CVSS Score:4.9

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Linux
    Product
    Linux Kernel

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    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://secunia.com/advisories/35675
    http://secunia.com/advisories/36045
    http://secunia.com/advisories/36054
    http://sourceforge.net/tracker/?func=detail&atid=893831&aid=2687641&group_id=180599
    http://www.debian.org/security/2009/dsa-1845
    http://www.mandriva.com/security/advisories?name=MDVSA-2010:198
    http://www.openwall.com/lists/oss-security/2009/06/30/1
    http://www.ubuntu.com/usn/usn-807-1
    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://secunia.com/advisories/35675
    http://secunia.com/advisories/36045
    http://secunia.com/advisories/36054
    http://sourceforge.net/tracker/?func=detail&atid=893831&aid=2687641&group_id=180599
    http://www.debian.org/security/2009/dsa-1845
    http://www.mandriva.com/security/advisories?name=MDVSA-2010:198
    http://www.openwall.com/lists/oss-security/2009/06/30/1
    http://www.ubuntu.com/usn/usn-807-1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High