SB2009081902 - NULL pointer dereference in Linux kernel wireless
Published: August 19, 2009
Security Bulletin ID
SB2009081902
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2009-2844)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: 8.7 [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]
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.
Remediation
Install update from vendor's website.
References
- 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