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7.8
HIGH CVSS 2.0
CVE-2009-2844
Linux cfg80211 NULL Pointer Dereference Denial of Service
Description

cfg80211 in net/wireless/scan.c in the Linux kernel 2.6.30-rc1 and other versions before 2.6.31-rc6 allows remote attackers to cause a denial of service (crash) via a sequence of beacon frames in which one frame omits an SSID Information Element (IE) and the subsequent frame contains an SSID IE, which triggers a NULL pointer dereference in the cmp_ies function. NOTE: a potential weakness in the is_mesh function was also addressed, but the relevant condition did not exist in the code, so it is not a vulnerability.

INFO

Published Date :

Aug. 18, 2009, 9 p.m.

Last Modified :

April 9, 2025, 12:30 a.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2009-2844 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
2 Linux kernel
: Total Affected Vendor : 1 | Products : 2
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 HIGH [email protected]
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2009-2844.

URL Resource
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=cd3468bad96c00b5a512f551674f36776129520e
http://jon.oberheide.org/files/cfg80211-remote-dos.c Patch
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 Patch
http://www.openwall.com/lists/oss-security/2009/08/17/2 Patch
http://www.securityfocus.com/bid/36052
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=cd3468bad96c00b5a512f551674f36776129520e
http://jon.oberheide.org/files/cfg80211-remote-dos.c Patch
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 Patch
http://www.openwall.com/lists/oss-security/2009/08/17/2 Patch
http://www.securityfocus.com/bid/36052
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2009-2844 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2009-2844 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2009-2844 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2009-2844 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=cd3468bad96c00b5a512f551674f36776129520e
    Added Reference http://jon.oberheide.org/files/cfg80211-remote-dos.c
    Added Reference http://secunia.com/advisories/36278
    Added Reference http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.30.5
    Added Reference http://www.openwall.com/lists/oss-security/2009/08/17/1
    Added Reference http://www.openwall.com/lists/oss-security/2009/08/17/2
    Added Reference http://www.securityfocus.com/bid/36052
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference MITRE http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=cd3468bad96c00b5a512f551674f36776129520e [No types assigned]
    Removed Reference MITRE http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=cd3468bad96c00b5a512f551674f36776129520e
  • Initial Analysis by [email protected]

    Aug. 19, 2009

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 7.8
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

1.74 }} 0.23%

score

0.81568

percentile