CVE-2026-44028_CVE-2026-44028

{
    "lastseen": "",
    "description": "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).",
    "published": "2026-05-05T00:30:16.205Z",
    "modified": "2026-05-05T00:37:42.535Z",
    "type": "cve",
    "title": "CVE-2026-44028",
    "source": "mitre",
    "references": "https://discourse.nixos.org/t/security-advisory-local-privilege-escalation-in-lix-and-nix/77407\nhttps://github.com/NixOS/nix/security/advisories/GHSA-vh5x-56v6-4368\nhttps://www.openwall.com/lists/oss-security/2026/05/04/33\nhttps://www.openwall.com/lists/oss-security/2026/05/04/32",
    "id": "CVE-2026-44028",
    "bulletinFamily": "",
    "cwe": [
        "CWE-674"
    ],
    "cvelist": null,
    "sourceData": "NixOS Nix 2.24.4\nNixOS Nix 2.29.0\nNixOS Nix 2.30.0\nNixOS Nix 2.31.0\nNixOS Nix 2.32.0\nNixOS Nix 2.33.0\nNixOS Nix 2.34.0\nLix Project Lix 2.93.0\nLix Project Lix 2.94.0\nLix Project Lix 2.95.0",
    "sourceHref": "",
    "cvss": {
        "score": 7.5,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Nix",
    "version": "2.24.4",
    "vendor": "NixOS",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}