ghsa-x53f-w58c-2223
Vulnerability from github
Published
2024-06-25 15:31
Modified
2025-11-04 00:30
Severity ?
7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Details

In the Linux kernel, the following vulnerability has been resolved:

nilfs2: fix nilfs_empty_dir() misjudgment and long loop on I/O errors

The error handling in nilfs_empty_dir() when a directory folio/page read fails is incorrect, as in the old ext2 implementation, and if the folio/page cannot be read or nilfs_check_folio() fails, it will falsely determine the directory as empty and corrupt the file system.

In addition, since nilfs_empty_dir() does not immediately return on a failed folio/page read, but continues to loop, this can cause a long loop with I/O if i_size of the directory's inode is also corrupted, causing the log writer thread to wait and hang, as reported by syzbot.

Fix these issues by making nilfs_empty_dir() immediately return a false value (0) if it fails to get a directory folio/page.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-39469"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-06-25T15:15:15Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix nilfs_empty_dir() misjudgment and long loop on I/O errors\n\nThe error handling in nilfs_empty_dir() when a directory folio/page read\nfails is incorrect, as in the old ext2 implementation, and if the\nfolio/page cannot be read or nilfs_check_folio() fails, it will falsely\ndetermine the directory as empty and corrupt the file system.\n\nIn addition, since nilfs_empty_dir() does not immediately return on a\nfailed folio/page read, but continues to loop, this can cause a long loop\nwith I/O if i_size of the directory\u0027s inode is also corrupted, causing the\nlog writer thread to wait and hang, as reported by syzbot.\n\nFix these issues by making nilfs_empty_dir() immediately return a false\nvalue (0) if it fails to get a directory folio/page.",
  "id": "GHSA-x53f-w58c-2223",
  "modified": "2025-11-04T00:30:49Z",
  "published": "2024-06-25T15:31:09Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-39469"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/11a2edb70356a2202dcb7c9c189c8356ab4752cd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/129dcd3e7d036218db3f59c82d82004b9539ed82"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2ac8a2fe22bdde9eecce2a42cf5cab79333fb428"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/405b71f1251e5ae865f53bd27c45114e6c83bee3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/59f14875a96ef93f05b82ad3c980605f2cb444b5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7373a51e7998b508af7136530f3a997b286ce81c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c77ad608df6c091fe64ecb91f41ef7cb465587f1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d18b05eda7fa77f02114f15b02c009f28ee42346"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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