f2fs: fix fsck inconsistency caused by FGGC of node block_CVE-2026-46175

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix fsck inconsistency caused by FGGC of node block\n\nDuring FGGC node block migration, fsck may incorrectly treat the\nmigrated node block as fsync-written data.\n\nThe reproduction scenario:\nroot@vm:/mnt/f2fs# seq 1 2048 | xargs -n 1 ./test_sync // write inline inode and sync\nroot@vm:/mnt/f2fs# rm -f 1\nroot@vm:/mnt/f2fs# sync\nroot@vm:/mnt/f2fs# f2fs_io gc_range // move data block in sync mode and not write CP\n  SPO, \"fsck --dry-run\" find inode has already checkpointed but still\n  with DENT_BIT_SHIFT set\n\nThe root cause is that GC does not clear the dentry mark and fsync mark\nduring node block migration, leading fsck to misinterpret them as\nuser-issued fsync writes.\n\nIn BGGC mode, node block migration is handled by f2fs_sync_node_pages(),\nwhich guarantees the dentry and fsync marks are cleared before writing.\n\nThis patch move the set/clear of the fsync|dentry marks into\n__write_node_folio to make the logic clearer, and ensures the\nfsync|dentry mark is cleared in FGGC.",
    "published": "2026-05-28T09:36:29.522Z",
    "modified": "2026-05-30T10:48:40.716Z",
    "type": "cve",
    "title": "f2fs: fix fsck inconsistency caused by FGGC of node block",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/8be551f538dc5b64183e27bd45a7a0795263f760\nhttps://git.kernel.org/stable/c/e7c6d30169b03307d27c4479563df79c08f3a746\nhttps://git.kernel.org/stable/c/c3e238bd1f56993f205ef83889d406dfeaf717a8",
    "id": "CVE-2026-46175",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux da011cc0da8cf4a60ddf4d2ae8b42902a3d71e5f\nLinux Linux da011cc0da8cf4a60ddf4d2ae8b42902a3d71e5f\nLinux Linux da011cc0da8cf4a60ddf4d2ae8b42902a3d71e5f\nLinux Linux 4.7",
    "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": "da011cc0da8cf4a60ddf4d2ae8b42902a3d71e5f",
    "vendor": "Linux",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}