NULL pointer dereference in Linux kernel - CVE-2009-2844
Published: August 19, 2009 / Updated: March 19, 2012
Vulnerability identifier: #VU91017
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2009-2844
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the cmp_ies() and is_mesh() functions in net/wireless/scan.c. A remote non-authenticated attacker can perform a denial of service (DoS) attack.
How to mitigate CVE-2009-2844
Install update from vendor's website.
Sources
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=cd3468bad96c00b5a512f551674f36776129520e
- http://jon.oberheide.org/files/cfg80211-remote-dos.c
- http://secunia.com/advisories/36278
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.30.5
- http://www.openwall.com/lists/oss-security/2009/08/17/1
- http://www.openwall.com/lists/oss-security/2009/08/17/2
- http://www.securityfocus.com/bid/36052