btrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file()_CVE-2026-43117

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file()\n\nIf overlay is used on top of btrfs, dentry->d_sb translates to overlay's\nsuper block and fsid assignment will lead to a crash.\n\nUse file_inode(file)->i_sb to always get btrfs_sb.",
    "published": "2026-05-06T07:40:41.862Z",
    "modified": "2026-05-08T12:40:41.936Z",
    "type": "cve",
    "title": "btrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file()",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/c09a7446aab5773f38d6abb25fce99b8e1dfbc97\nhttps://git.kernel.org/stable/c/32372781d664a9b03c40343e96c29d0a6139f97d\nhttps://git.kernel.org/stable/c/2e4adfaec97ee053ad1bdfb5036845e66f7e0d8a\nhttps://git.kernel.org/stable/c/d110d7cdb045715c0b45b0dfd974525bb38f653d\nhttps://git.kernel.org/stable/c/a85b46db143fda5869e7d8df8f258ccef5fa1719",
    "id": "CVE-2026-43117",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux bc074524e123ded281cde25ebc5661910f9679e3\nLinux Linux bc074524e123ded281cde25ebc5661910f9679e3\nLinux Linux bc074524e123ded281cde25ebc5661910f9679e3\nLinux Linux bc074524e123ded281cde25ebc5661910f9679e3\nLinux Linux bc074524e123ded281cde25ebc5661910f9679e3\nLinux Linux 4.8",
    "sourceHref": "",
    "cvss": {
        "score": 9.1,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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": "bc074524e123ded281cde25ebc5661910f9679e3",
    "vendor": "Linux",
    "ai_description": "A vulnerability in the Linux kernel's btrfs filesystem can cause a crash when using overlay on top of btrfs due to incorrect superblock retrieval.",
    "ai_severity": "Critical",
    "ai_vendor": "Linux",
    "ai_product": "Linux Kernel",
    "ai_version": "bc074524e123ded281cde25ebc5661910f9679e3, 4.8",
    "ai_score": 9.1
}