exfat: fix improper check of dentry.stream.valid_size_MS:CVE-2025-40287

{
    "lastseen": "2025-12-08T21:40:02",
    "description": "",
    "published": "2025-12-08T01:04:47",
    "modified": "2025-12-08T14:38:22",
    "type": "mscve",
    "title": "exfat: fix improper check of dentry.stream.valid_size",
    "source": "",
    "references": "",
    "id": "MS:CVE-2025-40287",
    "bulletinFamily": "microsoft",
    "cwe": null,
    "cvelist": [
        "CVE-2025-40287"
    ],
    "sourceData": "",
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    "cvss": {
        "score": 0,
        "severity": "NONE",
        "vector": "NONE",
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    },
    "href": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-40287",
    "category_name": "News",
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