ghsa-93f5-rwwh-v8p5
Vulnerability from github
Published
2025-07-25 15:30
Modified
2025-07-25 15:30
Details

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

NFSv4/pNFS: Fix a race to wake on NFS_LAYOUT_DRAIN

We found a few different systems hung up in writeback waiting on the same page lock, and one task waiting on the NFS_LAYOUT_DRAIN bit in pnfs_update_layout(), however the pnfs_layout_hdr's plh_outstanding count was zero.

It seems most likely that this is another race between the waiter and waker similar to commit ed0172af5d6f ("SUNRPC: Fix a race to wake a sync task"). Fix it up by applying the advised barrier.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-38393"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-25T13:15:28Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSv4/pNFS: Fix a race to wake on NFS_LAYOUT_DRAIN\n\nWe found a few different systems hung up in writeback waiting on the same\npage lock, and one task waiting on the NFS_LAYOUT_DRAIN bit in\npnfs_update_layout(), however the pnfs_layout_hdr\u0027s plh_outstanding count\nwas zero.\n\nIt seems most likely that this is another race between the waiter and waker\nsimilar to commit ed0172af5d6f (\"SUNRPC: Fix a race to wake a sync task\").\nFix it up by applying the advised barrier.",
  "id": "GHSA-93f5-rwwh-v8p5",
  "modified": "2025-07-25T15:30:52Z",
  "published": "2025-07-25T15:30:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38393"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/08287df60bac5b008b6bcdb03053988335d3d282"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1f4da20080718f258e189a2c5f515385fa393da6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/864a54c1243ed3ca60baa4bc492dede1361f4c83"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8846fd02c98da8b79e6343a20e6071be6f372180"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8ca65fa71024a1767a59ffbc6a6e2278af84735e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c01776287414ca43412d1319d2877cbad65444ac"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e4b13885e7ef1e64e45268feef1e5f0707c47e72"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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