ghsa-7rq4-pc5w-9jq7
Vulnerability from github
Published
2025-07-10 09:32
Modified
2025-07-10 09:32
Details

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

btrfs: exit after state insertion failure at btrfs_convert_extent_bit()

If insert_state() state failed it returns an error pointer and we call extent_io_tree_panic() which will trigger a BUG() call. However if CONFIG_BUG is disabled, which is an uncommon and exotic scenario, then we fallthrough and call cache_state() which will dereference the error pointer, resulting in an invalid memory access.

So jump to the 'out' label after calling extent_io_tree_panic(), it also makes the code more clear besides dealing with the exotic scenario where CONFIG_BUG is disabled.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-38269"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-10T08:15:25Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: exit after state insertion failure at btrfs_convert_extent_bit()\n\nIf insert_state() state failed it returns an error pointer and we call\nextent_io_tree_panic() which will trigger a BUG() call. However if\nCONFIG_BUG is disabled, which is an uncommon and exotic scenario, then\nwe fallthrough and call cache_state() which will dereference the error\npointer, resulting in an invalid memory access.\n\nSo jump to the \u0027out\u0027 label after calling extent_io_tree_panic(), it also\nmakes the code more clear besides dealing with the exotic scenario where\nCONFIG_BUG is disabled.",
  "id": "GHSA-7rq4-pc5w-9jq7",
  "modified": "2025-07-10T09:32:28Z",
  "published": "2025-07-10T09:32:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38269"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3bf179e36da917c5d9bec71c714573ed1649b7c1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/58c50f45e1821a04d61b62514f9bd34afe67c622"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8d9d32088e304e2bc444a3087cab0bbbd9951866"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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