fkie_cve-2025-38297
Vulnerability from fkie_nvd
Published
2025-07-10 08:15
Modified
2025-07-10 13:17
Severity ?
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/14cbdd64f3870cf0a2d94b87919b9056448c59a0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/179c0c7044a378198adb36f2a12410ab68cc730a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/81d72f9241d884ec29524431f74f8009310cfa0c
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: PM: EM: Se corrige un posible error de divisi\u00f3n por cero en em_compute_costs(). Cuando el dispositivo no es de tipo CPU, table[i].performance no se inicializa en la funci\u00f3n em_init_performance() anterior, lo que resulta en una divisi\u00f3n por cero al calcular los costos en em_compute_costs(). Dado que el algoritmo \"cost\" solo se utiliza para c\u00e1lculos de eficiencia energ\u00e9tica de EAS y actualmente no lo utilizan otros controladores de dispositivos, se debe agregar la comprobaci\u00f3n _is_cpu_device(dev) para evitar este problema de divisi\u00f3n por cero."
    }
  ],
  "id": "CVE-2025-38297",
  "lastModified": "2025-07-10T13:17:30.017",
  "metrics": {},
  "published": "2025-07-10T08:15:28.390",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/14cbdd64f3870cf0a2d94b87919b9056448c59a0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/179c0c7044a378198adb36f2a12410ab68cc730a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/81d72f9241d884ec29524431f74f8009310cfa0c"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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