slaacd in OpenBSD 6.9 and 7.0 before 2022-03-22 has an integer signedness error and resultant heap-based buffer overflow triggerable by a crafted IPv6 router advertisement. NOTE: privilege separation and pledge can prevent exploitation.
When converting from one data type to another, such as long to integer, data can be omitted or translated in a way that produces unexpected values. If the resulting values are used in a sensitive context, then dangerous behaviors may occur.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Openbsd | Openbsd | 6.9 (including) | 6.9 (including) |
| Openbsd | Openbsd | 7.0 (including) | 7.0 (including) |