Description
Off-by-one error in afs_pioctl.c in OpenAFS before 1.6.16 might allow local users to cause a denial of service (memory overwrite and system crash) via a pioctl with an input buffer size of 4096 bytes.
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 | 1.6.17-1 | — |
| Debian 12 | openafs | 1.6.17-1 | — |
| Debian 8 | openafs | 1.6.9-2+deb8u5 | DSA-3569-1 |
| Debian 7 | openafs | 1.6.1-3+deb7u6 | DLA-493-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | openafs | No fix yet | — |
Advisories 2
- DLA-493-1 openafs - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3569-1 openafs - security update Debian Security (DSA / DLA) · Mar 9, 2026