The i386_set_ldt system call in NetBSD 1.5 and earlier, and OpenBSD 2.8 and earlier, when the USER_LDT kernel option is enabled, does not validate a call gate target, which allows local users to gain root privileges by creating a segment call gate in the Local Descriptor Table (LDT) with a target that specifies an arbitrary kernel address.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Netbsd | Netbsd | * | 1.5 (including) |
| Openbsd | Openbsd | * | 2.8 (including) |