ghsa-cw7w-cfpj-r652
Vulnerability from github
Published
2025-07-10 09:32
Modified
2025-07-10 09:32
Details

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

PM: EM: Fix potential division-by-zero error in em_compute_costs()

When the device is of a non-CPU type, table[i].performance won't be initialized in the previous em_init_performance(), resulting in division by zero when calculating costs in em_compute_costs().

Since the 'cost' algorithm is only used for EAS energy efficiency calculations and is currently not utilized by other device drivers, we should add the _is_cpu_device(dev) check to prevent this division-by-zero issue.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-38297"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-10T08:15:28Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nPM: EM: Fix potential division-by-zero error in em_compute_costs()\n\nWhen the device is of a non-CPU type, table[i].performance won\u0027t be\ninitialized in the previous em_init_performance(), resulting in division\nby zero when calculating costs in em_compute_costs().\n\nSince the \u0027cost\u0027 algorithm is only used for EAS energy efficiency\ncalculations and is currently not utilized by other device drivers, we\nshould add the _is_cpu_device(dev) check to prevent this division-by-zero\nissue.",
  "id": "GHSA-cw7w-cfpj-r652",
  "modified": "2025-07-10T09:32:29Z",
  "published": "2025-07-10T09:32:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38297"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/14cbdd64f3870cf0a2d94b87919b9056448c59a0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/179c0c7044a378198adb36f2a12410ab68cc730a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/81d72f9241d884ec29524431f74f8009310cfa0c"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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