NULL pointer dereference in Linux kernel - CVE-2009-2287
Published: July 1, 2009 / Updated: August 26, 2020
Vulnerability identifier: #VU45889
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2009-2287
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error. A local user can trigger denial of service conditions via a crafted cr3 value, which triggers a NULL pointer dereference in the gfn_to_rmap function.
Affected software
Linux kernel
How to mitigate CVE-2009-2287
Update to version 2.6.30.
Linux kernel - update to 2.6.30
External References
- http://git.kernel.org/?p=linux/kernel/git/stable/stable-queue.git;a=blob;f=queue-2.6.30/kvm-x86-check-for-cr3-validity-in-ioctl_set_sregs.patch;h=b48a47dad2cf76358b327368f80c0805e6370c68;hb=e7c45b24f298b5d9efd7d401150f64a1b51aaac4
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=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