Description
guix-daemon in GNU Guix before 5ab3c4c allows privilege escalation because build outputs are accessible by local users before file metadata concerns (e.g., for setuid and setgid programs) are properly addressed. The vulnerability can be remediated within the product via certain pull, reconfigure, and restart actions. Both 5ab3c4c and 5582241 are needed to resolve the vulnerability.
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 12 | guix | 1.4.0-3+deb12u2 | DSA-5805-1 |
| Debian 11 | guix | 1.2.0-4+deb11u3 | DLA-3959-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 24.04 LTS | guix | 1.4.0-6ubuntu0.1~esm1 | USN-8773-1 |
| Ubuntu Pro 22.04 LTS | guix | 1.3.0-4ubuntu0.1~esm1 | USN-8773-1 |
Advisories 3
- USN-8773-1 guix vulnerability Ubuntu Security Notices (USN) · Sep 16, 2026
- DLA-3959-1 guix - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-5805-1 guix - security update Debian Security (DSA / DLA) · Mar 9, 2026