An issue was discovered in GNU Hurd before 0.9 20210404-9. A single pager port is shared among everyone who mmaps a file, allowing anyone to modify any files that they can read. This can be trivially exploited to get full root access.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Hurd | Gnu | * | 0.9.20210404-9 (excluding) |