Vulnerability Description
Nix is a package manager for Linux and other Unix systems. A fixed-output derivations on Linux can send file descriptors to files in the Nix store to another program running on the host (or another fixed-output derivation) via Unix domain sockets in the abstract namespace. This allows to modify the output of the derivation, after Nix has registered the path as "valid" and immutable in the Nix database. In particular, this allows the output of fixed-output derivations to be modified from their expected content. This issue has been addressed in versions 2.3.18 2.18.2 2.19.4 and 2.20.5. Users are advised to upgrade. There are no known workarounds for this vulnerability.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Nixos | Nix | < 2.3.18 |
Related Weaknesses (CWE)
References
- https://github.com/NixOS/nix/commit/f8170ce9f119e5e6724eb81ff1b5a2d4c0024000Patch
- https://github.com/NixOS/nix/security/advisories/GHSA-2ffj-w4mj-pg37Vendor Advisory
- https://hackmd.io/03UGerewRcy3db44JQoWvwExploit
- https://github.com/NixOS/nix/commit/f8170ce9f119e5e6724eb81ff1b5a2d4c0024000Patch
- https://github.com/NixOS/nix/security/advisories/GHSA-2ffj-w4mj-pg37Vendor Advisory
- https://guix.gnu.org/en/blog/2025/privilege-escalation-vulnerabilities-2025/
- https://hackmd.io/03UGerewRcy3db44JQoWvwExploit
FAQ
What is CVE-2024-27297?
CVE-2024-27297 is a vulnerability with a CVSS score of 6.3 (MEDIUM). Nix is a package manager for Linux and other Unix systems. A fixed-output derivations on Linux can send file descriptors to files in the Nix store to another program running on the host (or another fi...
How severe is CVE-2024-27297?
CVE-2024-27297 has been rated MEDIUM with a CVSS base score of 6.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-27297?
Check the references section above for vendor advisories and patch information. Affected products include: Nixos Nix.