--- title: 'USN-7633-1: Nix vulnerabilities | Ubuntu security notices' description: Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things. url: https://ubuntu.com/security/notices/USN-7633-1 --- 1. [Ubuntu Security Notices](https://ubuntu.com/security/notices) 2. USN-7633-1 --- # USN-7633-1: Nix vulnerabilities Publication date 14 July 2025 Overview Several security issues were fixed in Nix. Releases [24.04 LTS](https://ubuntu.com/security/notices?release=noble) [22.04 LTS](https://ubuntu.com/security/notices?release=jammy) --- Open side navigation ## Packages * [nix](https://ubuntu.com/security/cves?package=nix) - Cross-platform package manager ## Details Linus Heckemann discovered that Nix did not correctly handle certain binaries. An attacker could possibly use this issue to execute arbitrary code. ([CVE-2024-38531](https://ubuntu.com/security/CVE-2024-38531)) Pierre-Etienne Meunier discovered that Nix did not correctly handle TLS certificates. A remote attacker could possibly use this issue to leak sensitive information. ([CVE-2024-47174](https://ubuntu.com/security/CVE-2024-47174)) It was discovered that Nix did not correctly handle Unix sockets. An attacker could possibly use this issue execute arbitrary code. This issue only affected Ubuntu 24.04 LTS. ([CVE-2024-27297](https://ubuntu.com/security/CVE-2024-27297)) It was discovered that Nix did not correctly handle unpacking Nix archives (NARS). If a user or automated system were tricked into opening a specially crafted file, an attacker could possibly use this issue to cause a denial of service or execute arbitrary code. ( --- Show more ## Update instructions In general, a standard system update will make all the necessary changes. [Learn more about how to get the fixes.](https://ubuntu.com/security/cves/about#security) The problem can be corrected by updating your system to the following package versions: | Ubuntu Release | Package Version | | --- | --- | | 24.04 LTS noble | [nix-bin](https://launchpad.net/ubuntu/+source/nix) –  2.18.1+dfsg-1ubuntu5+esm2   Ubuntu Pro | | | | 22.04 LTS jammy | [nix-bin](https://launchpad.net/ubuntu/+source/nix) –  2.6.0+dfsg-3ubuntu0.1~esm1   Ubuntu Pro | | | --- ### Reduce your security exposure Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines. [Get Ubuntu Pro](https://ubuntu.com/pro) ## References * [CVE-2024-47174](https://ubuntu.com/security/CVE-2024-47174) * [CVE-2024-45593](https://ubuntu.com/security/CVE-2024-45593) * [CVE-2024-38531](https://ubuntu.com/security/CVE-2024-38531) * [CVE-2024-27297](https://ubuntu.com/security/CVE-2024-27297) ## Related notices * [USN-8773-1](https://ubuntu.com/security/notices/USN-8773-1)