ghsa-8w2v-rqc9-m6rw
Vulnerability from github
Published
2025-09-15 15:31
Modified
2025-09-15 15:31
Details

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

erofs: fix order >= MAX_ORDER warning due to crafted negative i_size

As syzbot reported [1], the root cause is that i_size field is a signed type, and negative i_size is also less than EROFS_BLKSIZ. As a consequence, it's handled as fast symlink unexpectedly.

Let's fall back to the generic path to deal with such unusual i_size.

[1] https://lore.kernel.org/r/000000000000ac8efa05e7feaa1f@google.com

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50313"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-15T15:15:43Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: fix order \u003e= MAX_ORDER warning due to crafted negative i_size\n\nAs syzbot reported [1], the root cause is that i_size field is a\nsigned type, and negative i_size is also less than EROFS_BLKSIZ.\nAs a consequence, it\u0027s handled as fast symlink unexpectedly.\n\nLet\u0027s fall back to the generic path to deal with such unusual i_size.\n\n[1] https://lore.kernel.org/r/000000000000ac8efa05e7feaa1f@google.com",
  "id": "GHSA-8w2v-rqc9-m6rw",
  "modified": "2025-09-15T15:31:27Z",
  "published": "2025-09-15T15:31:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50313"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0ab621fcdff1a58ff4de51a8590fa92a0ecd34be"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/17a0cdbd7b0cf0fc0d7ca4187a67f8f1c18c291f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1dd73601a1cba37a0ed5f89a8662c90191df5873"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6235fb899b25fd287d5e42635ff82196395708cc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/acc2f40b980c61a9178b72cdedd150b829064997"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b6c8330f5b0f22149957a2e4977fd0f01a9db7cd"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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