gfs2: Fix unlikely race in gdlm_put_lock_MS:CVE-2025-40242

{
    "lastseen": "2025-12-06T09:59:34",
    "description": "",
    "published": "2025-12-06T01:02:00",
    "modified": "2025-12-06T01:02:00",
    "type": "mscve",
    "title": "gfs2: Fix unlikely race in gdlm_put_lock",
    "source": "",
    "references": "",
    "id": "MS:CVE-2025-40242",
    "bulletinFamily": "microsoft",
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    "href": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-40242",
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