The iwl_set_rate function in compatible/iwl3945-base.c in iwlwifi 1.1.21 and earlier dereferences an iwl_get_hw_mode return value without checking for NULL, which might allow remote attackers to cause a denial of service (kernel panic) via unspecified vectors during module initialization.
article.gmane.org/gmane.linux.drivers.ipw3945.devel/1618
bugs.gentoo.org/show_bug.cgi?id=199209
osvdb.org/44749
secunia.com/advisories/29236
www.intellinuxwireless.org/repos/?p=iwlwifi.git%3Ba=commitdiff%3Bh=25db44d4cdfe31d59223d74cb577f4a71aff1a40
www.redhat.com/support/errata/RHSA-2008-0154.html
www.securityfocus.com/bid/26842
www.vupen.com/english/advisories/2007/4211
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10787