In OpenBSD 7.4 before errata 009, a race condition between pf(4)s processing of packets and expiration of packet states may cause a kernel panic.
Weakness
The product checks the state of a resource before using that resource, but the resource’s state can change between the check and the use in a way that invalidates the results of the check.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Openbsd | Openbsd | * | 7.4 (excluding) |
| Openbsd | Openbsd | 7.4 (including) | 7.4 (including) |
| Openbsd | Openbsd | 7.4-errata_001 (including) | 7.4-errata_001 (including) |
| Openbsd | Openbsd | 7.4-errata_002 (including) | 7.4-errata_002 (including) |
| Openbsd | Openbsd | 7.4-errata_003 (including) | 7.4-errata_003 (including) |
| Openbsd | Openbsd | 7.4-errata_004 (including) | 7.4-errata_004 (including) |
| Openbsd | Openbsd | 7.4-errata_005 (including) | 7.4-errata_005 (including) |
| Openbsd | Openbsd | 7.4-errata_006 (including) | 7.4-errata_006 (including) |
| Openbsd | Openbsd | 7.4-errata_007 (including) | 7.4-errata_007 (including) |
| Openbsd | Openbsd | 7.4-errata_008 (including) | 7.4-errata_008 (including) |