md/md-llbitmap: fix percpu_ref not resurrected on suspend timeout_CVE-2026-45955

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd/md-llbitmap: fix percpu_ref not resurrected on suspend timeout\n\nWhen llbitmap_suspend_timeout() times out waiting for percpu_ref to\nbecome zero, it returns -ETIMEDOUT without resurrecting the percpu_ref.\nThe caller (md_llbitmap_daemon_fn) then continues to the next page\nwithout calling llbitmap_resume(), leaving the percpu_ref in a killed\nstate permanently.\n\nFix this by resurrecting the percpu_ref before returning the error,\nensuring the page control structure remains usable for subsequent\noperations.",
    "published": "2026-05-27T12:18:10.951Z",
    "modified": "2026-06-05T06:06:10.073Z",
    "type": "cve",
    "title": "md/md-llbitmap: fix percpu_ref not resurrected on suspend timeout",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/095417d6b669c2dec39a5842ccb94df915f97f54\nhttps://git.kernel.org/stable/c/2446d099350185caeed19ab2c0270451a97296fb\nhttps://git.kernel.org/stable/c/d119bd2e1643cc023210ff3c6f0657e4f914e71d",
    "id": "CVE-2026-45955",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux 5ab829f1971dc99f2aac10846c378e67fc875abc\nLinux Linux 5ab829f1971dc99f2aac10846c378e67fc875abc\nLinux Linux 5ab829f1971dc99f2aac10846c378e67fc875abc\nLinux Linux 6.18",
    "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": "Linux",
    "version": "5ab829f1971dc99f2aac10846c378e67fc875abc",
    "vendor": "Linux",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}