Description
A local user can bypass the OpenAFS PAG (Process Authentication Group) throttling mechanism in Unix clients, allowing the user to create a PAG using an existing id number, effectively joining the PAG and letting the user steal the credentials in that PAG.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| The OpenAFS Foundation | OpenAFS | 1.0 – < 1.6.24, 1.8.0 – < 1.8.12.2, 1.9.0 – < 1.9.1 | 1.6.24 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 13 | openafs | 1.8.13-1 | — |
| Debian 12 | openafs | 1.8.9-1+deb12u1 | DSA-5842-1 |
| Debian 11 | openafs | 1.8.6-5+deb11u1 | DLA-4168-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | openafs | No fix yet | — |
| Ubuntu 22.04 LTS | openafs | No fix yet | — |
| Ubuntu 20.04 LTS | openafs | No fix yet | — |
| Ubuntu 18.04 LTS | openafs | No fix yet | — |
| Ubuntu 16.04 LTS | openafs | No fix yet | — |
Advisories 3
- DSA-5842-1 openafs - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-4168-1 openafs - security update Debian Security (DSA / DLA) · Mar 9, 2026
- WID-SEC-2024-3448 OpenAFS: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 18, 2025