What is CVE-2009-2844?

CVE-2009-2844 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10. CVE-2009-2844 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2009-2844?

CVE-2009-2844 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is AV:N/AC:L/Au:N/C:N/I:N/A:C.

Is there a patch available for CVE-2009-2844?

No patch is currently available for CVE-2009-2844. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2009-2844 actively exploited?

CVE-2009-2844 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2009-2844

High

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.

Package Linux Kernel

Published 2009-08-18

Last modified 2026-04-23

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

7.8

out of 10

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

User Interaction

Scope

Confidentiality

Low

Integrity

None

Availability

Vector string

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

Weakness type

CWE-399

CVE-2009-2844 is classified as CWE-399

See CWE-399 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2009-2844 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Secunia
http://secunia.com/advisories/36278
Kernel.org
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.30.5
Securityfocus
http://www.securityfocus.com/bid/36052
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=cd3468bad96c00b5a512f551674f36776129520e
Patch
Kernel patch commit
http://jon.oberheide.org/files/cfg80211-remote-dos.c
Patch
Kernel patch commit
http://www.openwall.com/lists/oss-security/2009/08/17/1
Patch

4 patch commits total View all on NVD

Details

CVE ID CVE-2009-2844

Severity High

CVSS score 7.8 / 10

CVSS version 2.0

Published 2009-08-18

Modified 2026-04-23

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2009-2844?

CVE-2009-2844 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . CVE-2009-2844 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2009-2844?

CVE-2009-2844 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 2.0). The vector string is AV:N/AC:L/Au:N/C:N/I:N/A:C.
Is there a patch available for CVE-2009-2844?

No patch is currently available for CVE-2009-2844. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2009-2844 actively exploited?

No — CVE-2009-2844 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.