CVE-2026-44028

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An issue was discovered in Nix before 2.34.7 and Lix before 2.95.2. Unbounded recursion in the NAR (Nix Archive) parser could lead to a stack-to-heap overflow when the parser is run on a coroutine stack. The stack is allocated without a guard page, which means that a stack overflow could overwrite memory on the heap and could allow arbitrary code execution as the Nix daemon (run as root in multi-user installations) if ASLR hardening is bypassed. This can be exploited by all users able to connect to the daemon (e.g., in Nix, this is configurable via the allowed-users setting, defaulting to all users). The fixed versions are 2.34.7, 2.33.6, 2.32.8, 2.31.5, 2.30.5, 2.29.4, and 2.28.7 for Nix (introduced in 2.24.4); and 2.95.2, 2.94.2, and 2.93.4 for Lix (introduced in 2.93.0).

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N

未经控制的递归

Nix和lix 安全漏洞

lix是lix开源的一款软件包管理器。Nix是Nix开源的一个包管理器。 Nix 2.34.7之前版本和lix 2.95.2之前版本存在安全漏洞，该漏洞源于NAR解析器中无界递归可能导致栈到堆溢出，当解析器在协程栈上运行时，栈分配无保护页，栈溢出可能覆盖堆内存，若绕过ASLR强化，可能允许任意代码执行作为Nix守护进程。

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