NULL pointer dereference in Linux Kernel
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 · last modified .
CVSS v2 metric
CVSS v2 base score 4.9 (Medium). Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.004 (31.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 31.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Linux Kernel
- Canonical Ubuntu Linux — versions 6.06, 8.04, 8.10
- Debian Linux — versions 4.0, 5.0
Weakness classification (CWE)
References
- secunia.com/advisories/35675 (Broken Link, third-party-advisory)
- www.mandriva.com/security/advisories (vendor-advisory, Broken Link)
- www.ubuntu.com/usn/usn-807-1 (vendor-advisory, Third Party Advisory)
- git.kernel.org/
- sourceforge.net/tracker/ (Third Party Advisory)
- secunia.com/advisories/36045 (Broken Link, third-party-advisory)
- secunia.com/advisories/36054 (Broken Link, third-party-advisory)
- www.debian.org/security/2009/dsa-1845 (vendor-advisory, Third Party Advisory)
- www.openwall.com/lists/oss-security/2009/06/30/1 (mailing-list, Patch, Mailing List, Third Party Advisory)
- git.kernel.org/