CVE-2025-32438 — Creation of Temporary File With Insecure Permissions in Nixpkgs

CWE-378 — Creation of Temporary File With Insecure PermissionsCWE-379 — Creation of Temporary File in Directory with Insecure Permissions1 documents1 sources
Severity
8.8HIGHNVD
EPSS
0.1%
top 80.72%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Nixos Nixpkgs
Timeline
PublishedApr 15

Description

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;.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HExploitability: 2.0 | Impact: 6.0

Affected Packages1 packages

▶CVEListV5nixos/nixpkgs< b17590193d8e5697000c23c66afcf11e1753734d+1