drm/xe: Open-code GGTT MMIO access protection_CVE-2026-23466

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe: Open-code GGTT MMIO access protection\n\nGGTT MMIO access is currently protected by hotplug (drm_dev_enter),\nwhich works correctly when the driver loads successfully and is later\nunbound or unloaded. However, if driver load fails, this protection is\ninsufficient because drm_dev_unplug() is never called.\n\nAdditionally, devm release functions cannot guarantee that all BOs with\nGGTT mappings are destroyed before the GGTT MMIO region is removed, as\nsome BOs may be freed asynchronously by worker threads.\n\nTo address this, introduce an open-coded flag, protected by the GGTT\nlock, that guards GGTT MMIO access. The flag is cleared during the\ndev_fini_ggtt devm release function to ensure MMIO access is disabled\nonce teardown begins.\n\n(cherry picked from commit 4f3a998a173b4325c2efd90bdadc6ccd3ad9a431)",
    "published": "2026-04-03T15:15:45.754Z",
    "modified": "2026-04-27T14:02:40.866Z",
    "type": "cve",
    "title": "drm/xe: Open-code GGTT MMIO access protection",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/e2b424aadecb640f9e037b2891191cf8fd4c64cf\nhttps://git.kernel.org/stable/c/1e9e2640d870d4837bcfdc220cb2c99ae5ee119f\nhttps://git.kernel.org/stable/c/76326dc06d8793c2c81c31cc0115dbc348de2f88\nhttps://git.kernel.org/stable/c/01f2557aa684e514005541e71a3d01f4cd45c170",
    "id": "CVE-2026-23466",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux 919bb54e989c1edef87e9797be125c94c450fc65\nLinux Linux 919bb54e989c1edef87e9797be125c94c450fc65\nLinux Linux 919bb54e989c1edef87e9797be125c94c450fc65\nLinux Linux 919bb54e989c1edef87e9797be125c94c450fc65\nLinux Linux 6.12",
    "sourceHref": "",
    "cvss": {
        "score": 7.8,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
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        "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": "Linux",
    "version": "919bb54e989c1edef87e9797be125c94c450fc65",
    "vendor": "Linux",
    "ai_description": "",
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    "ai_score": 0
}