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.
References
- 36278 third-party-advisory
- http://jon.oberheide.org/files/cfg80211-remote-dos.c
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=cd3468bad96c00b5a512f551674f36776129520e
- [oss-security] 20090817 Re: CVE request: kernel: cfg80211: missing NULL pointer checks mailing-list
- [oss-security] 20090817 CVE request: kernel: cfg80211: missing NULL pointer checks mailing-list
- 36052 vdb-entry
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.30.5