ghsa-m7rv-xwhq-qx85
Vulnerability from github
Published
2025-03-12 12:30
Modified
2025-03-13 21:31
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details

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

s390/ism: add release function for struct device

According to device_release() in /drivers/base/core.c, a device without a release function is a broken device and must be fixed.

The current code directly frees the device after calling device_add() without waiting for other kernel parts to release their references. Thus, a reference could still be held to a struct device, e.g., by sysfs, leading to potential use-after-free issues if a proper release function is not set.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-21856"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-03-12T10:15:18Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/ism: add release function for struct device\n\nAccording to device_release() in /drivers/base/core.c,\na device without a release function is a broken device\nand must be fixed.\n\nThe current code directly frees the device after calling device_add()\nwithout waiting for other kernel parts to release their references.\nThus, a reference could still be held to a struct device,\ne.g., by sysfs, leading to potential use-after-free\nissues if a proper release function is not set.",
  "id": "GHSA-m7rv-xwhq-qx85",
  "modified": "2025-03-13T21:31:18Z",
  "published": "2025-03-12T12:30:59Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21856"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0505ff2936f166405d81d0d454a81d9c14124344"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/915e34d5ad35a6a9e56113f852ade4a730fb88f0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/940d15254d2216b585558bcf36312da50074e711"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e26e8ac27351f457091459a0a355bacd06d5bb2b"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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