Description
An issue was discovered in OpenAFS before 1.6.23 and 1.8.x before 1.8.2. Several RPC server routines did not fully initialize their output variables before returning, leaking memory contents from both the stack and the heap. Because the OpenAFS cache manager functions as an Rx server for the AFSCB service, clients are also susceptible to information leakage. For example, RXAFSCB_TellMeAboutYourself leaks kernel memory and KAM_ListEntry leaks kaserver memory.
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 | 1.8.2-1 | — |
| Debian 12 | openafs | 1.8.2-1 | — |
| Debian 9 | openafs | 1.6.20-2+deb9u2 | DSA-4302-1 |
| Debian 8 | openafs | 1.6.9-2+deb8u8 | DLA-1513-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | openafs | No fix yet | — |
| Ubuntu 16.04 LTS | openafs | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | openafs | 1.8.8-1.13 | openSUSE-SU-2024:11113-1 |
Advisories 3
- DSA-4302-1 openafs - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1513-1 openafs - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:11113-1 openafs-1.8.8-1.13 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026