The kqueue mechanism in FreeBSD 4.3 through 4.6 STABLE allows local users to cause a denial of service (kernel panic) via a pipe call in which one end is terminated and an EVFILT_WRITE filter is registered for the other end.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Freebsd | Freebsd | 4.3-release (including) | 4.3-release (including) |
| Freebsd | Freebsd | 4.4-release (including) | 4.4-release (including) |
| Freebsd | Freebsd | 4.5-release (including) | 4.5-release (including) |
| Freebsd | Freebsd | 4.6-release (including) | 4.6-release (including) |
| Freebsd | Freebsd | 4.6-stable (including) | 4.6-stable (including) |