Race condition in the mac80211 subsystem in the Linux kernel before 2.6.32-rc8-next-20091201 allows remote attackers to cause a denial of service (system crash) via a Delete Block ACK (aka DELBA) packet that triggers a certain state change in the absence of an aggregation session.
http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html
https://bugzilla.redhat.com/show_bug.cgi?id=541149
http://secunia.com/advisories/38017
http://secunia.com/advisories/38492
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11583
http://www.debian.org/security/2010/dsa-1996
http://www.kernel.org/pub/linux/kernel/v2.6/next/patch-v2.6.32-rc8-next-20091201.gz