ghsa-3g6q-j56q-qw54
Vulnerability from github
Published
2025-05-08 09:30
Modified
2025-06-05 15:31
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

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

driver core: fix potential NULL pointer dereference in dev_uevent()

If userspace reads "uevent" device attribute at the same time as another threads unbinds the device from its driver, change to dev->driver from a valid pointer to NULL may result in crash. Fix this by using READ_ONCE() when fetching the pointer, and take bus' drivers klist lock to make sure driver instance will not disappear while we access it.

Use WRITE_ONCE() when setting the driver pointer to ensure there is no tearing.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-37800"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-08T07:15:50Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndriver core: fix potential NULL pointer dereference in dev_uevent()\n\nIf userspace reads \"uevent\" device attribute at the same time as another\nthreads unbinds the device from its driver, change to dev-\u003edriver from a\nvalid pointer to NULL may result in crash. Fix this by using READ_ONCE()\nwhen fetching the pointer, and take bus\u0027 drivers klist lock to make sure\ndriver instance will not disappear while we access it.\n\nUse WRITE_ONCE() when setting the driver pointer to ensure there is no\ntearing.",
  "id": "GHSA-3g6q-j56q-qw54",
  "modified": "2025-06-05T15:31:22Z",
  "published": "2025-05-08T09:30:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-37800"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/18daa52418e7e4629ed1703b64777294209d2622"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2b344e779d9afd0fcb5ee4000e4d0fc7d8d867eb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3781e4b83e174364998855de777e184cf0b62c40"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/abe56be73eb10a677d16066f65ff9d30251f5eee"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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