CVE-2025-32438 – Local privilege escalation in make-initrd-ng

https://notcve.org/view.php?id=CVE-2025-32438

15 Apr 2025 — make-initrd-ng is a tool for copying binaries and their dependencies. Local privilege escalation affecting all NixOS users. With systemd.shutdownRamfs.enable enabled (the default) a local user is able to create a program that will be executed by root during shutdown. Patches exist for NixOS 24.11 and 25.05 / unstable. As a workaround, set systemd.shutdownRamfs.enable = false;. • https://github.com/NixOS/nixpkgs/commit/b17590193d8e5697000c23c66afcf11e1753734d • CWE-378: Creation of Temporary File With Insecure Permissions CWE-379: Creation of Temporary File in Directory with Insecure Permissions •