high
7.8
CWE
399 476
Advisory Published
Updated

CVE-2009-2844: Null Pointer Dereference

First published: Tue Aug 18 2009(Updated: )

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.

Credit: cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Linux Linux kernel=2.6.11
Linux Linux kernel=2.6.16.16
Linux Linux kernel=2.6.11.2
Linux Linux kernel=2.6.15.3
Linux Linux kernel=2.6.11.10
Linux Linux kernel=2.6.1
Linux Linux kernel=2.6.14.7
Linux Linux kernel=2.6.13
Linux Linux kernel=2.6.13.3
Linux Linux kernel=2.6.11.8
Linux Linux kernel=2.6.14.4
Linux Linux kernel=2.6.14
Linux Linux kernel=2.6.16.31--rc3
Linux Linux kernel=2.6.16.18
Linux Linux kernel=2.6.10
Linux Linux kernel=2.6.14.3
Linux Linux kernel=2.6.11.6
Linux Linux kernel=2.6.11.11
Linux Linux kernel=2.6.16.13
Linux Linux kernel=2.6.16.15
Linux Linux kernel=2.6.15.6
Linux Linux kernel=2.6.15.1
Linux Linux kernel=2.6.11.5
Linux Linux kernel=2.6.16.1
Linux Linux kernel=2.6.14.5
Linux Linux kernel=2.6.13.2
Linux Linux kernel=2.6.13.5
Linux Linux kernel=2.6.16.11
Linux Linux kernel=2.6.16.14
Linux Linux kernel=2.6.16.25
Linux Linux kernel=2.6.16.21
Linux Linux kernel=2.6.16.28
Linux Linux kernel=2.6.14.1
Linux Linux kernel=2.6.16.23
Linux Linux kernel=2.6.12.5
Linux Linux kernel=2.6.15.7
Linux Linux kernel=2.6.16.3
Linux Linux kernel=2.6.14.6
Linux Linux kernel=2.6.12.1
Linux Linux kernel=2.6.11.9
Linux Linux kernel=2.6.0
Linux Linux kernel=2.6.13.4
Linux Linux kernel=2.6.12.2
Linux Linux kernel=2.6.16.31
Linux Linux kernel=2.6.16.26
Linux Linux kernel=2.6.16.29
Linux Linux kernel=2.6.16
Linux Linux kernel=2.6.15.2
Linux Linux kernel=2.6.16.22
Linux Linux kernel=2.6.16.10
Linux Linux kernel=2.6.12.4
Linux Linux kernel=2.6.11.3
Linux Linux kernel=2.6.16.24
Linux Linux kernel=2.6.16.31--rc2
Linux kernel=2.6.24.7
Linux Linux kernel=2.6.12.3
Linux Linux kernel=2.6.16.30
Linux Linux kernel=2.6.15.4
Linux Linux kernel=2.6.16.17
Linux Linux kernel=2.6.16.12
Linux Linux kernel=2.6.16.31--rc1
Linux Linux kernel=2.6.16.27
Linux Linux kernel=2.6.12.6
Linux Linux kernel<=2.6.16.31
Linux Linux kernel=2.6.11.7
Linux Linux kernel=2.6.16.2
Linux Linux kernel=2.6.15
Linux kernel=2.6.25.15
Linux Linux kernel=2.6.14.2
Linux Linux kernel=2.6.11.4
Linux Linux kernel=2.6.16.19
Linux Linux kernel=2.6.11.12
Linux Linux kernel=2.6.16.20
Linux Linux kernel=2.6.15.5
Linux Linux kernel=2.6.11.1
Linux Linux kernel=2.6.16.31--rc4
Linux Linux kernel=2.6.13.1
Linux Linux kernel=2.6
Linux Linux kernel=2.6.12

Remedy

http://jon.oberheide.org/files/cfg80211-remote-dos.c

Remedy

http://www.openwall.com/lists/oss-security/2009/08/17/1

Remedy

http://www.openwall.com/lists/oss-security/2009/08/17/2

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