ieee80211_input.c in MadWifi before 0.9.3 does not properly process Channel Switch Announcement Information Elements (CSA IEs), which allows remote attackers to cause a denial of service (loss of communication) via a Channel Switch Count less than or equal to one, triggering a channel change.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Madwifi | Madwifi | * | 0.9.2 (including) |
| Madwifi | Madwifi | * | 0.9.2.1 (including) |
| Linux-restricted-modules-2.6.17 | Ubuntu | edgy | * |
| Linux-restricted-modules-2.6.20 | Ubuntu | feisty | * |