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TI-2024-25766 Aliases CVE-2024-38531

Nix sandbox escape

Priority LOW 16CWE-278Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
None · Low · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

Nix is a package manager for Linux and other Unix systems that makes package management reliable and reproducible. A build process has access to and can change the permissions of the build directory. After creating a setuid binary in a globally accessible location, a malicious local user can assume the permissions of a Nix daemon worker and hijack all future builds. This issue was patched in version(s) 2.23.1, 2.22.2, 2.21.3, 2.20.7, 2.19.5 and 2.18.4.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00143 3rd percentileScored 2026-11-07
Fix Fixed nix (NixOS): 2.23.1, 2.22.2, 2.21.3 +3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
NixOSnix2.23.0 to before 2.23.1; 2.22.0 to before 2.22.2; 2.21.0 to before 2.21.3; 2.20.0 to before 2.20.7; 2.19.0 to before 2.19.5; 2.18.0 to before 2.18.42.23.1, 2.22.2, 2.21.3, 2.20.7, 2.19.5, 2.18.4Patch availableCNA
  • nix VendorNixOS Affected 2.23.0 to before 2.23.1; 2.22.0 to before 2.22.2; 2.21.0 to before 2.21.3; 2.20.0 to before 2.20.7; 2.19.0 to before 2.19.5; 2.18.0 to before 2.18.4 Fixed in 2.23.1, 2.22.2, 2.21.3, 2.20.7, 2.19.5, 2.18.4 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:nixos:nix:*:*:*:*:*:*:*:*——NixOS
  • cpe:2.3:a:nixos:nix:*:*:*:*:*:*:*:* Versions — — ·NixOS

Remediation

  • Fix · CNA nix (NixOS) Fixed in 2.23.1, 2.22.2, 2.21.3, 2.20.7, 2.19.5, 2.18.4

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-38531

References

Other 2

  • TI-2026-23989 crypto: algif_aead - Revert to operating out-of-place KEVCVSS 3.1HIGH 7.8
  • TI-2024-11208 Rsync: heap buffer overflow in rsync due to improper checksum length handling CVSS 3.1CRITICAL 9.8
  • TI-2026-19201 Tandoor Recipes module allows SQLite database to be externally accessible with the default settings CVSS 4.0HIGH 8.7
  • TI-2024-11209 Rsync: info leak via uninitialized stack contents CVSS 3.1HIGH 7.5
  • TI-2024-11212 Rsync: --safe-links option bypass leads to path traversal CVSS 3.1HIGH 7.5
  • TI-2024-11211 Rsync: path traversal vulnerability in rsync CVSS 3.1HIGH 7.5
See all 40 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences