NixOS Nix up to 2.24.14/2.26.3/2.28.3/2.29.0 toctou

Summaryinfo

A vulnerability classified as problematic was found in NixOS Nix up to 2.24.14/2.26.3/2.28.3/2.29.0. This affects an unknown function. Executing a manipulation can lead to toctou. This vulnerability is handled as CVE-2025-46415. It is possible to launch the attack on the local host. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as problematic was found in NixOS Nix up to 2.24.14/2.26.3/2.28.3/2.29.0. This vulnerability affects an unknown function. The manipulation with an unknown input leads to a toctou vulnerability. The CWE definition for the vulnerability is CWE-367. The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state. As an impact it is known to affect availability. CVE summarizes:

A race condition in the Nix, Lix, and Guix package managers allows the removal of content from arbitrary folders. This affects Nix before 2.24.15, 2.26.4, 2.28.4, and 2.29.1; Lix before 2.91.2, 2.92.2, and 2.93.1; and Guix before 1.4.0-38.0e79d5b.

The advisory is available at discourse.nixos.org. This vulnerability was named CVE-2025-46415 since 04/24/2025. The exploitation appears to be difficult. Local access is required to approach this attack. The technical details are unknown and an exploit is not available.

Upgrading to version 2.24.15, 2.26.4, 2.28.4 or 2.29.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-19426). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• NixOS

Name

• Nix

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11
• 2.12
• 2.13
• 2.14
• 2.15
• 2.16
• 2.17
• 2.18
• 2.19
• 2.20
• 2.21
• 2.22
• 2.23
• 2.24
• 2.24.0
• 2.24.1
• 2.24.2
• 2.24.3
• 2.24.4
• 2.24.5
• 2.24.6
• 2.24.7
• 2.24.8
• 2.24.9
• 2.24.10
• 2.24.11
• 2.24.12
• 2.24.13
• 2.24.14
• 2.25
• 2.26
• 2.26.0
• 2.26.1
• 2.26.2
• 2.26.3
• 2.27
• 2.28
• 2.28.0
• 2.28.1
• 2.28.2
• 2.28.3
• 2.29.0

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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