FKIE_CVE-2025-38297

Vulnerability from fkie_nvd - Published: 2025-07-10 08:15 - Updated: 2026-06-17 09:16
Severity
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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/14cbdd64f3870cf0a2d94b87919b9056448c59a0Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/179c0c7044a378198adb36f2a12410ab68cc730aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/81d72f9241d884ec29524431f74f8009310cfa0cPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/power/energy_model.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "81d72f9241d884ec29524431f74f8009310cfa0c",
              "status": "affected",
              "version": "1b600da510735a0f92c8b4140a7e2cb037a6a6c3",
              "versionType": "git"
            },
            {
              "lessThan": "14cbdd64f3870cf0a2d94b87919b9056448c59a0",
              "status": "affected",
              "version": "1b600da510735a0f92c8b4140a7e2cb037a6a6c3",
              "versionType": "git"
            },
            {
              "lessThan": "179c0c7044a378198adb36f2a12410ab68cc730a",
              "status": "affected",
              "version": "1b600da510735a0f92c8b4140a7e2cb037a6a6c3",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/power/energy_model.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.9"
            },
            {
              "lessThan": "6.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.34",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A373E395-B1B2-445B-8784-2A89BF879AD5",
              "versionEndExcluding": "6.12.34",
              "versionStartIncluding": "6.9",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "0541C761-BD5E-4C1A-8432-83B375D7EB92",
              "versionEndExcluding": "6.15.3",
              "versionStartIncluding": "6.13",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "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": "2026-06-17T09:16:34.347",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-07-10T08:15:28.390",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/14cbdd64f3870cf0a2d94b87919b9056448c59a0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/179c0c7044a378198adb36f2a12410ab68cc730a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/81d72f9241d884ec29524431f74f8009310cfa0c"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-369"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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