ghsa-6x3x-fg57-3vcm
Vulnerability from github
Published
2024-05-22 09:31
Modified
2024-05-22 09:31
Details

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

btrfs: fix abort logic in btrfs_replace_file_extents

Error injection testing uncovered a case where we'd end up with a corrupt file system with a missing extent in the middle of a file. This occurs because the if statement to decide if we should abort is wrong.

The only way we would abort in this case is if we got a ret != -EOPNOTSUPP and we called from the file clone code. However the prealloc code uses this path too. Instead we need to abort if there is an error, and the only error we don't abort on is -EOPNOTSUPP and only if we came from the clone file code.

Show details on source website


{
  "affected": [],
  "aliases": [
    "CVE-2021-47433"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-22T07:15:08Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix abort logic in btrfs_replace_file_extents\n\nError injection testing uncovered a case where we\u0027d end up with a\ncorrupt file system with a missing extent in the middle of a file.  This\noccurs because the if statement to decide if we should abort is wrong.\n\nThe only way we would abort in this case is if we got a ret !=\n-EOPNOTSUPP and we called from the file clone code.  However the\nprealloc code uses this path too.  Instead we need to abort if there is\nan error, and the only error we _don\u0027t_ abort on is -EOPNOTSUPP and only\nif we came from the clone file code.",
  "id": "GHSA-6x3x-fg57-3vcm",
  "modified": "2024-05-22T09:31:44Z",
  "published": "2024-05-22T09:31:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47433"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0e309e1152fc34ef75991d9d69b165dbf75bf26c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0e32a2b85c7d92ece86c17dfef390c5ed79c6378"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4afb912f439c4bc4e6a4f3e7547f2e69e354108f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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