ghsa-j54f-72m2-vvmr
Vulnerability from github
Published
2024-05-01 15:30
Modified
2024-05-01 15:30
Details

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

pstore: inode: Only d_invalidate() is needed

Unloading a modular pstore backend with records in pstorefs would trigger the dput() double-drop warning:

WARNING: CPU: 0 PID: 2569 at fs/dcache.c:762 dput.part.0+0x3f3/0x410

Using the combo of d_drop()/dput() (as mentioned in Documentation/filesystems/vfs.rst) isn't the right approach here, and leads to the reference counting problem seen above. Use d_invalidate() and update the code to not bother checking for error codes that can never happen.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-27389"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-01T13:15:51Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\npstore: inode: Only d_invalidate() is needed\n\nUnloading a modular pstore backend with records in pstorefs would\ntrigger the dput() double-drop warning:\n\n  WARNING: CPU: 0 PID: 2569 at fs/dcache.c:762 dput.part.0+0x3f3/0x410\n\nUsing the combo of d_drop()/dput() (as mentioned in\nDocumentation/filesystems/vfs.rst) isn\u0027t the right approach here, and\nleads to the reference counting problem seen above. Use d_invalidate()\nand update the code to not bother checking for error codes that can\nnever happen.\n\n---",
  "id": "GHSA-j54f-72m2-vvmr",
  "modified": "2024-05-01T15:30:37Z",
  "published": "2024-05-01T15:30:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-27389"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/340682ed1932b8e3bd0bfc6c31a0c6354eb57cc6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4cdf9006fc095af71da80e9b5f48a32e991b9ed3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a43e0fc5e9134a46515de2f2f8d4100b74e50de3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cb9e802e49c24eeb3af35e9e8c04d526f35f112a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/db6e5e16f1ee9e3b01d2f71c7f0ba945f4bf0f4e"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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