Description
gssproxy (aka gss-proxy) before 0.8.3 does not unlock cond_mutex before pthread exit in gp_worker_main() in gp_workers.c. NOTE: An upstream comment states "We are already on a shutdown path when running the code in question, so a DoS there doesn't make any sense, and there has been no additional information provided us (as upstream) to indicate why this would be a problem.
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 14 | gssproxy | 0.8.4-1 | — |
| Debian 13 | gssproxy | 0.8.4-1 | — |
| Debian 12 | gssproxy | 0.8.4-1 | — |
| Debian 9 | gssproxy | 0.5.1-2+deb9u1 | DLA-2516-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP2 | gssproxy | 0.8.2-3.6.1 | SUSE-SU-2021:1029-1 |
| SLES 12 SP5 | gssproxy | 0.8.2-4.5.1 | SUSE-SU-2021:1030-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP5 | gssproxy | 0.8.2-4.5.1 | SUSE-SU-2021:1030-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.2 | gssproxy | 0.8.2-lp152.2.3.1 | openSUSE-SU-2021:0531-1 |
Advisories 4
- DLA-2516-1 gssproxy - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2021:0531-1 Security update for gssproxy SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:1030-1 Security update for gssproxy SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:1029-1 Security update for gssproxy SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://pagure.io/gssproxy/c/cb761412e299ef907f22cd7c4146d50c8a792003?branch=master
- https://github.com/gssapi/gssproxy/compare/v0.8.2...v0.8.3
- https://github.com/gssapi/gssproxy/commit/cb761412e299ef907f22cd7c4146d50c8a792003
- [debian-lts-announce] 20210104 [SECURITY] [DLA 2516-1] gssproxy security update mailing-list