The kernel in NetBSD-current before September 28, 2005 allows local users to cause a denial of service (system crash) by using the SIOCGIFALIAS ioctl to gather information on a non-existent alias of a network interface, which causes a NULL pointer dereference.
| Software | From | Fixed in |
|---|---|---|
| netbsd / netbsd | 1.6 | 1.6.x |
| netbsd / netbsd | 2.1 | 2.1.x |
| netbsd / netbsd | 2.0.2 | 2.0.2.x |
| netbsd / netbsd | 1.6.1 | 1.6.1.x |
| netbsd / netbsd | 2.0.3 | 2.0.3.x |
| netbsd / netbsd | 1.6.2 | 1.6.2.x |
| netbsd / netbsd | 1.6-beta | 1.6-beta.x |
| netbsd / netbsd | 2.0.1 | 2.0.1.x |
| netbsd / netbsd | 3.0 | 3.0.x |
| netbsd / netbsd | 2.0 | 2.0.x |