CVE-2026-64846— Nix 递归-Nix 特性沙箱外任意文件截断漏洞
可能的 ATT&CK 技术 1AI
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一、 漏洞 CVE-2026-64846 基础信息
漏洞信息
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Vulnerability Title
Nix: Arbitrary file truncation outside the sandbox with recursive-nix experimental feature
来源: CVE Program / CVE List V5
Vulnerability Description
Nix is a package manager for Linux and other Unix systems. Prior to 2.35.0, a malicious derivation executed with the recursive-nix experimental feature can exploit a time-of-check/time-of-use race involving final symlink handling in the LocalStore restore path. The race can cause writeFile to follow a substituted final symlink when opening a path with O_TRUNC instead of enforcing FinalSymlink::DontFollow, allowing the Nix process or nix-daemon to create or truncate an empty file outside the build sandbox with the daemon user's permissions. The primitive does not provide arbitrary-content writes and requires winning the race. This issue is fixed in version 2.35.0.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
CWE-61
来源: CVE Program / CVE List V5
受影响产品
二、漏洞 CVE-2026-64846 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
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CVE-2026-64846 补丁与修复 (2)
CVE-2026-64846 厂商安全公告 (1)
IV. Related Vulnerabilities
V. Comments for CVE-2026-64846
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