ghsa-7fh7-rm8f-wj9x
Vulnerability from github
Published
2025-10-07 18:31
Modified
2025-10-07 18:31
Details

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

gfs2: Fix possible data races in gfs2_show_options()

Some fields such as gt_logd_secs of the struct gfs2_tune are accessed without holding the lock gt_spin in gfs2_show_options():

val = sdp->sd_tune.gt_logd_secs; if (val != 30) seq_printf(s, ",commit=%d", val);

And thus can cause data races when gfs2_show_options() and other functions such as gfs2_reconfigure() are concurrently executed:

spin_lock(&gt->gt_spin); gt->gt_logd_secs = newargs->ar_commit;

To fix these possible data races, the lock sdp->sd_tune.gt_spin is acquired before accessing the fields of gfs2_tune and released after these accesses.

Further changes by Andreas:

  • Don't hold the spin lock over the seq_printf operations.
Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2023-53622"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-07T16:15:44Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ngfs2: Fix possible data races in gfs2_show_options()\n\nSome fields such as gt_logd_secs of the struct gfs2_tune are accessed\nwithout holding the lock gt_spin in gfs2_show_options():\n\n  val = sdp-\u003esd_tune.gt_logd_secs;\n  if (val != 30)\n    seq_printf(s, \",commit=%d\", val);\n\nAnd thus can cause data races when gfs2_show_options() and other functions\nsuch as gfs2_reconfigure() are concurrently executed:\n\n  spin_lock(\u0026gt-\u003egt_spin);\n  gt-\u003egt_logd_secs = newargs-\u003ear_commit;\n\nTo fix these possible data races, the lock sdp-\u003esd_tune.gt_spin is\nacquired before accessing the fields of gfs2_tune and released after these\naccesses.\n\nFurther changes by Andreas:\n\n- Don\u0027t hold the spin lock over the seq_printf operations.",
  "id": "GHSA-7fh7-rm8f-wj9x",
  "modified": "2025-10-07T18:31:09Z",
  "published": "2025-10-07T18:31:09Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53622"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/235a5ae73cea29109a3e06f100493f17857e6a93"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/42077d4de49e4d9c773c97c42d5383b4899a8f9d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6fa0a72cbbe45db4ed967a51f9e6f4e3afe61d20"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7c5b2649f6a37d45bfb7abf34c9b71d08677139f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7e5bbeb7eb813bb2568e1d5d02587df943272e57"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/85e888150075cb221270b64bf772341fc6bd11d9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a4f71523ed2123d63b431cc0cea4e9f363a0f054"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b4a7ab57effbed42624842f2ab2a49b177c21a47"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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