Improper access control in nix - CVE-2024-27297
Published: March 7, 2024 / Updated: April 8, 2026
Vulnerability identifier: #VU125377
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2024-27297
CWE-ID: CWE-284
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vendor: nixos.org
Affected software:
nix
nix
Detailed vulnerability description
The vulnerability allows a remote user to modify the output of fixed-output derivations.
The vulnerability exists due to improper access control in fixed-output derivations when sending file descriptors to files in the Nix store to another program via Unix domain sockets in the abstract namespace. A remote user can send file descriptors to another program running on the host to modify the output of fixed-output derivations.
This issue affects Linux systems and can occur after Nix has registered the path as valid and immutable in the Nix database.
How to mitigate CVE-2024-27297
Install security update from vendor's website.