The OSI networking kernel (sys/netiso) in NetBSD 1.6.1 and earlier does not use a BSD-required PKTHDR mbuf when sending certain error responses to the sender of an OSI packet, which allows remote attackers to cause a denial of service (kernel panic or crash) via certain OSI packets.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Netbsd | Netbsd | 1.5 (including) | 1.5 (including) |
| Netbsd | Netbsd | 1.5.1 (including) | 1.5.1 (including) |
| Netbsd | Netbsd | 1.5.2 (including) | 1.5.2 (including) |
| Netbsd | Netbsd | 1.5.3 (including) | 1.5.3 (including) |
| Netbsd | Netbsd | 1.6 (including) | 1.6 (including) |
| Netbsd | Netbsd | 1.6.1 (including) | 1.6.1 (including) |