uutils coreutils mkfifo Privilege Escalation via TOCTOU Race Condition_CVE-2026-35352

{
    "lastseen": "",
    "description": "A Time-of-Check to Time-of-Use (TOCTOU) race condition exists in the mkfifo utility of uutils coreutils. The utility creates a FIFO and then performs a path-based chmod to set permissions. A local attacker with write access to the parent directory can swap the newly created FIFO for a symbolic link between these two operations. This redirects the chmod call to an arbitrary file, potentially enabling privilege escalation if the utility is run with elevated privileges.",
    "published": "2026-04-22T16:08:07.422Z",
    "modified": "2026-04-22T16:08:07.422Z",
    "type": "cve",
    "title": "uutils coreutils mkfifo Privilege Escalation via TOCTOU Race Condition",
    "source": "canonical",
    "references": "https://github.com/uutils/coreutils/issues/10020",
    "id": "CVE-2026-35352",
    "bulletinFamily": "",
    "cwe": [
        "CWE-367"
    ],
    "cvelist": null,
    "sourceData": "",
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    "cvss": {
        "score": 7,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
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        "baseScore": 0,
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        "privilegesRequired": "",
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        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
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    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "coreutils",
    "version": "",
    "vendor": "Uutils",
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}