CVE-2025-52993
Publication date 27 June 2025
Last updated 2 July 2025
Ubuntu priority
Description
A race condition in the Nix, Lix, and Guix package managers enables changing the ownership of arbitrary files to the UID and GID of the build user (e.g., nixbld* or guixbuild*). This affects Nix before 2.24.15, 2.26.4, 2.28.4, and 2.29.1; Lix before 2.91.2, 2.92.2, and 2.93.1; and Guix before 1.4.0-38.0e79d5b.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| guix | 25.10 questing | Not in release |
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Needs evaluation
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
5.6 · Medium
|
| Attack vector | Local |
| Attack complexity | High |
| Privileges required | None |
| User interaction | None |
| Scope | Changed |
| Confidentiality | Low |
| Integrity impact | Low |
| Availability impact | Low |
| Vector | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L |
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2025-52993
- https://guix.gnu.org/en/blog/2025/privilege-escalation-vulnerabilities-2025/
- https://codeberg.org/guix/guix/pulls/788
- https://codeberg.org/guix/guix/commit/7173c2c0cad8afc9d8d1ad26f345b5a04f47716a
- https://codeberg.org/guix/guix/commit/be8aca065118aa4485c02f991c51bea89034defa
- https://codeberg.org/guix/guix/commit/fb42611b8f27960304db5a1c0d33b8371dcde2a8
- https://codeberg.org/guix/guix/commit/c659f977bb09de6d5615e6aa9efddedc1d9ff458
- https://codeberg.org/guix/guix/commit/0e79d5b6550729e6ce3bac1e979638ac054ba5a5
- https://codeberg.org/guix/guix/commit/30a5d140aa5a789a362749d057754783fea83dde