cryptodev-linux <= 1.14 get_userbuf Use After Free LPE_CVE-2026-28529

{
    "lastseen": "",
    "description": "cryptodev-linux version 1.14 and prior contain a page reference handling flaw in the get_userbuf function of the /dev/crypto device driver that allows local users to trigger use-after-free conditions. Attackers with access to the /dev/crypto interface can repeatedly decrement reference counts of controlled pages to achieve local privilege escalation.",
    "published": "2026-03-25T13:00:58.783Z",
    "modified": "2026-03-25T13:48:53.136Z",
    "type": "cve",
    "title": "cryptodev-linux <= 1.14 get_userbuf Use After Free LPE",
    "source": "VulnCheck",
    "references": "https://nasm.re/posts/cryptodev-linux-vuln/\nhttps://gist.github.com/n4sm/0fd2479e0c23e0fa2f192cd8fda45750\nhttps://github.com/cryptodev-linux/cryptodev-linux/pull/104\nhttps://www.vulncheck.com/advisories/cryptodev-linux-get-userbuf-use-after-free-lpe",
    "id": "CVE-2026-28529",
    "bulletinFamily": "",
    "cwe": [
        "CWE-416"
    ],
    "cvelist": null,
    "sourceData": "cryptodev-linux cryptodev-linux 0",
    "sourceHref": "",
    "cvss": {
        "score": 8.5,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
        "version": "4.0"
    },
    "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": "cryptodev-linux",
    "version": "0",
    "vendor": "cryptodev-linux",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}