ghsa-hxv7-wmrf-q57m
Vulnerability from github
Published
2025-05-20 18:30
Modified
2025-05-20 18:30
Details

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

smb: client: Avoid race in open_cached_dir with lease breaks

A pre-existing valid cfid returned from find_or_create_cached_dir might race with a lease break, meaning open_cached_dir doesn't consider it valid, and thinks it's newly-constructed. This leaks a dentry reference if the allocation occurs before the queued lease break work runs.

Avoid the race by extending holding the cfid_list_lock across find_or_create_cached_dir and when the result is checked.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-37954"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-20T16:15:33Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: Avoid race in open_cached_dir with lease breaks\n\nA pre-existing valid cfid returned from find_or_create_cached_dir might\nrace with a lease break, meaning open_cached_dir doesn\u0027t consider it\nvalid, and thinks it\u0027s newly-constructed. This leaks a dentry reference\nif the allocation occurs before the queued lease break work runs.\n\nAvoid the race by extending holding the cfid_list_lock across\nfind_or_create_cached_dir and when the result is checked.",
  "id": "GHSA-hxv7-wmrf-q57m",
  "modified": "2025-05-20T18:30:56Z",
  "published": "2025-05-20T18:30:56Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-37954"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2407265dc32bc8cc45b62a612c2a214ba9038e8b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2ed98e89ebc2e1bc73534dc3c18cb7843a889ff9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3ca02e63edccb78ef3659bebc68579c7224a6ca2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/571dcf3d27b24800c171aea7b5e04ff06d10e2e9"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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