GHSA-V738-PVHM-MHVP

Vulnerability from github – Published: 2024-07-29 15:30 – Updated: 2025-11-04 00:30
VLAI
Details

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

nilfs2: fix kernel bug on rename operation of broken directory

Syzbot reported that in rename directory operation on broken directory on nilfs2, __block_write_begin_int() called to prepare block write may fail BUG_ON check for access exceeding the folio/page size.

This is because nilfs_dotdot(), which gets parent directory reference entry ("..") of the directory to be moved or renamed, does not check consistency enough, and may return location exceeding folio/page size for broken directories.

Fix this issue by checking required directory entries ("." and "..") in the first chunk of the directory in nilfs_dotdot().

Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2024-41034"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-07-29T15:15:11Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix kernel bug on rename operation of broken directory\n\nSyzbot reported that in rename directory operation on broken directory on\nnilfs2, __block_write_begin_int() called to prepare block write may fail\nBUG_ON check for access exceeding the folio/page size.\n\nThis is because nilfs_dotdot(), which gets parent directory reference\nentry (\"..\") of the directory to be moved or renamed, does not check\nconsistency enough, and may return location exceeding folio/page size for\nbroken directories.\n\nFix this issue by checking required directory entries (\".\" and \"..\") in\nthe first chunk of the directory in nilfs_dotdot().",
  "id": "GHSA-v738-pvhm-mhvp",
  "modified": "2025-11-04T00:30:59Z",
  "published": "2024-07-29T15:30:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-41034"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1a8879c0771a68d70ee2e5e66eea34207e8c6231"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/24c1c8566a9b6be51f5347be2ea76e25fc82b11e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/298cd810d7fb687c90a14d8f9fd1b8719a7cb8a5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/60f61514374e4a0c3b65b08c6024dd7e26150bfd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7000b438dda9d0f41a956fc9bffed92d2eb6be0d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a9a466a69b85059b341239766a10efdd3ee68a4b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a9e1ddc09ca55746079cc479aa3eb6411f0d99d4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ff9767ba2cb949701e45e6e4287f8af82986b703"
    },
    {
      "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:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}



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