nilfs2: fix use-after-free bug of nilfs_root in nilfs_evict_inode()

{
  "id": "9a20301dfd41fe46b10f75b2b52f3f035702736d1abc28259ad742c0bf2eebe6",
  "url": "https://osv.dev/vulnerability/CVE-2023-53804",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "nilfs2: fix use-after-free bug of nilfs_root in nilfs_evict_inode()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix use-after-free bug of nilfs_root in nilfs_evict_inode() During unmount process of nilfs2, nothing holds nilfs_root structure after nilfs2 detaches its writer in nilfs_detach_log_writer(). However, since nilfs_evict_inode() uses nilfs_root for some cleanup operations, it may cause use-after-free read if inodes are left in \"garbage_list\" and released by nilfs_dispose_list() at the end of nilfs_detach_log_writer(). Fix this issue by modifying nilfs_evict_inode() to only clear inode without additional metadata changes that use nilfs_root if the file system is degraded to read-only or the writer is detached.",
    "evidence": "osv:CVE-2023-53804",
    "products": [
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        "name": {
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    "severity": "high",
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      "aliases": [
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      "metrics": [
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          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
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      "modified": "2026-10-28T02:30:22.285325344Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/116d53f09ff52e6f98e3fe1f85d8898d6ba26c68",
        "https://git.kernel.org/stable/c/2a782ea8ebd712a458466e3103e2881b4f886cb5",
        "https://git.kernel.org/stable/c/6b4205ea97901f822004e6c8d59484ccfda03faa",
        "https://git.kernel.org/stable/c/9b5a04ac3ad9898c4745cba46ea26de74ba56a8e",
        "https://git.kernel.org/stable/c/acc2a40e428f12780004e1e9fce4722d88f909fd",
        "https://git.kernel.org/stable/c/b8427b8522d9ede53015ba45a9978ba68d1162f5",
        "https://git.kernel.org/stable/c/f31e18131ee2ce80a4da5c808221d25b1ae9ad6d",
        "https://git.kernel.org/stable/c/fb8e8d58f116d069e5939e1f786ac84e7fa4533e",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53804.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-53804",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53804.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-53804",
        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 488759,
  "published_at": "2025-12-09T00:01:01.787+00:00"
}