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

7 total
Showing 5 of 7 references View all on NVD

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?

    Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2009-2844 patch availability.

  • 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.

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