Userspace privilege escalation vulnerability on Cortex M_CVE-2025-9408

{
    "lastseen": "",
    "description": "System call entry on Cortex M (and possibly R and A, but I think not) has a race which allows very practical privilege escalation for malicious userspace processes.",
    "published": "2025-11-11T15:34:58.719Z",
    "modified": "2025-11-11T15:34:58.719Z",
    "type": "cve",
    "title": "Userspace privilege escalation vulnerability on Cortex M",
    "source": "zephyr",
    "references": "https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-3r6j-5mp3-75wr",
    "id": "CVE-2025-9408",
    "bulletinFamily": "",
    "cwe": [
        "CWE-270"
    ],
    "cvelist": null,
    "sourceData": "zephyrproject-rtos Zephyr *",
    "sourceHref": "",
    "cvss": {
        "score": 8.2,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/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": "Zephyr",
    "version": "*",
    "vendor": "zephyrproject-rtos",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}