Flaw in Linuxulator execution of setugid binaries_CVE-2026-49413

{
    "lastseen": "",
    "description": "The Linuxulator determined whether a binary was set-user-ID or set-group-ID by checking the P_SUGID process flag.  During execve(2), this flag is not yet set at the point where the auxiliary vector is constructed, so AT_SECURE was incorrectly set to zero for set-user-ID and set-group-ID executables.\n\nAn unprivileged local user can inject a shared library via LD_PRELOAD into a set-user-ID or set-group-ID Linux binary, gaining the privileges of that binary.",
    "published": "2026-06-27T09:08:23.756Z",
    "modified": "2026-06-29T13:05:38.668Z",
    "type": "cve",
    "title": "Flaw in Linuxulator execution of setugid binaries",
    "source": "freebsd",
    "references": "https://security.freebsd.org/advisories/FreeBSD-SA-26:30.linux.asc",
    "id": "CVE-2026-49413",
    "bulletinFamily": "",
    "cwe": [
        "CWE-266"
    ],
    "cvelist": null,
    "sourceData": "FreeBSD FreeBSD 15.0-RELEASE\nFreeBSD FreeBSD 14.4-RELEASE\nFreeBSD FreeBSD 14.3-RELEASE",
    "sourceHref": "",
    "cvss": {
        "score": 7.1,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
        "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": "FreeBSD",
    "version": "15.0-RELEASE",
    "vendor": "FreeBSD",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}