system
Describe <CVE-2009-4026>.
user
What is <CVE-2009-4026>?
assistant
The mac80211 subsystem in the Linux kernel before 2.6.32-rc8-next-20091201 allows remote attackers to cause a denial of service (panic) via a crafted Delete Block ACK (aka DELBA) packet, related to an erroneous "code shuffling patch.".