PT-2009-4718 · Linux · Linux Kernel

Matt T. Yourst · Published 2009-07-01 · Updated 2020-08-19 · CVE-2009-2287

Positive Technologies (AI Summary)

CVSS v2.0

4.9

Medium

Base vector

AV:L/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 2.6.30

Description The issue allows local users to cause a denial of service, resulting in a system crash or hang, by providing a crafted cr3 value in a KVM SET SREGS call. This triggers a NULL pointer dereference in the gfn to rmap function due to the lack of validation of the page table root.

Recommendations For Linux kernel versions prior to 2.6.30, update to version 2.6.30 or later to resolve the issue.

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2009-2287

DSA-1845-1

DSA-1846-1

Affected Products

Linux Kernel

References · 11

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