Vulnerability Monitor

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CVE-2009-2844

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.

Security Impact Summary

CVE-2009-2844 is a security vulnerability that . Impacting 2 products from linux, from linux organizations running these solutions should prioritize assessment and patching.

Historical Context

Originally identified in 2009, this vulnerability predates many modern security frameworks and practices. The vulnerability landscape of that era was characterized by different threat models and less mature defense mechanisms compared to contemporary standards.

Published

2009-08-18T21:00:00.313

Last Modified

2025-04-09T00:30:58.490

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 7.8 (HIGH)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: COMPLETE

Exploitability Score

10.0

Impact Score

6.9

Weaknesses

Type: Primary
CWE-399

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	linux	kernel	2.6.24.7	Yes
Application	linux	kernel	2.6.25.15	Yes
Operating System	linux	linux_kernel	≤ 2.6.16.31	Yes
Operating System	linux	linux_kernel	2.6	Yes
Operating System	linux	linux_kernel	2.6.0	Yes
Operating System	linux	linux_kernel	2.6.1	Yes
Operating System	linux	linux_kernel	2.6.10	Yes
Operating System	linux	linux_kernel	2.6.11	Yes
Operating System	linux	linux_kernel	2.6.11.1	Yes
Operating System	linux	linux_kernel	2.6.11.2	Yes
Operating System	linux	linux_kernel	2.6.11.3	Yes
Operating System	linux	linux_kernel	2.6.11.4	Yes
Operating System	linux	linux_kernel	2.6.11.5	Yes
Operating System	linux	linux_kernel	2.6.11.6	Yes
Operating System	linux	linux_kernel	2.6.11.7	Yes
Operating System	linux	linux_kernel	2.6.11.8	Yes
Operating System	linux	linux_kernel	2.6.11.9	Yes
Operating System	linux	linux_kernel	2.6.11.10	Yes
Operating System	linux	linux_kernel	2.6.11.11	Yes
Operating System	linux	linux_kernel	2.6.11.12	Yes
Operating System	linux	linux_kernel	2.6.12	Yes
Operating System	linux	linux_kernel	2.6.12.1	Yes
Operating System	linux	linux_kernel	2.6.12.2	Yes
Operating System	linux	linux_kernel	2.6.12.3	Yes
Operating System	linux	linux_kernel	2.6.12.4	Yes
Operating System	linux	linux_kernel	2.6.12.5	Yes
Operating System	linux	linux_kernel	2.6.12.6	Yes
Operating System	linux	linux_kernel	2.6.13	Yes
Operating System	linux	linux_kernel	2.6.13.1	Yes
Operating System	linux	linux_kernel	2.6.13.2	Yes
Operating System	linux	linux_kernel	2.6.13.3	Yes
Operating System	linux	linux_kernel	2.6.13.4	Yes
Operating System	linux	linux_kernel	2.6.13.5	Yes
Operating System	linux	linux_kernel	2.6.14	Yes
Operating System	linux	linux_kernel	2.6.14.1	Yes
Operating System	linux	linux_kernel	2.6.14.2	Yes
Operating System	linux	linux_kernel	2.6.14.3	Yes
Operating System	linux	linux_kernel	2.6.14.4	Yes
Operating System	linux	linux_kernel	2.6.14.5	Yes
Operating System	linux	linux_kernel	2.6.14.6	Yes
Operating System	linux	linux_kernel	2.6.14.7	Yes
Operating System	linux	linux_kernel	2.6.15	Yes
Operating System	linux	linux_kernel	2.6.15.1	Yes
Operating System	linux	linux_kernel	2.6.15.2	Yes
Operating System	linux	linux_kernel	2.6.15.3	Yes
Operating System	linux	linux_kernel	2.6.15.4	Yes
Operating System	linux	linux_kernel	2.6.15.5	Yes
Operating System	linux	linux_kernel	2.6.15.6	Yes
Operating System	linux	linux_kernel	2.6.15.7	Yes
Operating System	linux	linux_kernel	2.6.16	Yes
Operating System	linux	linux_kernel	2.6.16.1	Yes
Operating System	linux	linux_kernel	2.6.16.2	Yes
Operating System	linux	linux_kernel	2.6.16.3	Yes
Operating System	linux	linux_kernel	2.6.16.10	Yes
Operating System	linux	linux_kernel	2.6.16.11	Yes
Operating System	linux	linux_kernel	2.6.16.12	Yes
Operating System	linux	linux_kernel	2.6.16.13	Yes
Operating System	linux	linux_kernel	2.6.16.14	Yes
Operating System	linux	linux_kernel	2.6.16.15	Yes
Operating System	linux	linux_kernel	2.6.16.16	Yes
Operating System	linux	linux_kernel	2.6.16.17	Yes
Operating System	linux	linux_kernel	2.6.16.18	Yes
Operating System	linux	linux_kernel	2.6.16.19	Yes
Operating System	linux	linux_kernel	2.6.16.20	Yes
Operating System	linux	linux_kernel	2.6.16.21	Yes
Operating System	linux	linux_kernel	2.6.16.22	Yes
Operating System	linux	linux_kernel	2.6.16.23	Yes
Operating System	linux	linux_kernel	2.6.16.24	Yes
Operating System	linux	linux_kernel	2.6.16.25	Yes
Operating System	linux	linux_kernel	2.6.16.26	Yes
Operating System	linux	linux_kernel	2.6.16.27	Yes
Operating System	linux	linux_kernel	2.6.16.28	Yes
Operating System	linux	linux_kernel	2.6.16.29	Yes
Operating System	linux	linux_kernel	2.6.16.30	Yes
Operating System	linux	linux_kernel	2.6.16.31	Yes
Operating System	linux	linux_kernel	2.6.16.31	Yes
Operating System	linux	linux_kernel	2.6.16.31	Yes
Operating System	linux	linux_kernel	2.6.16.31	Yes
Operating System	linux	linux_kernel	2.6.16.31	Yes

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=cd3468bad96c00b5a512f551674f36776129520e ([email protected])
http://jon.oberheide.org/files/cfg80211-remote-dos.c Patch ([email protected])
http://secunia.com/advisories/36278 ([email protected])
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.30.5 ([email protected])
http://www.openwall.com/lists/oss-security/2009/08/17/1 Patch ([email protected])
http://www.openwall.com/lists/oss-security/2009/08/17/2 Patch ([email protected])
http://www.securityfocus.com/bid/36052 ([email protected])
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=cd3468bad96c00b5a512f551674f36776129520e (af854a3a-2127-422b-91ae-364da2661108)
http://jon.oberheide.org/files/cfg80211-remote-dos.c Patch (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/36278 (af854a3a-2127-422b-91ae-364da2661108)
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.30.5 (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2009/08/17/1 Patch (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2009/08/17/2 Patch (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/36052 (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For linux's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.