CVE-2024-27297

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.

• CWE-367
• CWE-367

• 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

Published

Mar 11, 2024

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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