CVE-2025-38297 (GCVE-0-2025-38297)
Vulnerability from cvelistv5
Published
2025-07-10 07:42
Modified
2025-07-28 04:17
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
Impacted products
Vendor Product Version
Linux Linux Version: 1b600da510735a0f92c8b4140a7e2cb037a6a6c3
Version: 1b600da510735a0f92c8b4140a7e2cb037a6a6c3
Version: 1b600da510735a0f92c8b4140a7e2cb037a6a6c3
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "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": [
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              "lessThan": "81d72f9241d884ec29524431f74f8009310cfa0c",
              "status": "affected",
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              "versionType": "git"
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              "versionType": "git"
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            {
              "lessThan": "179c0c7044a378198adb36f2a12410ab68cc730a",
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              "versionType": "git"
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          "product": "Linux",
          "programFiles": [
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          ],
          "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"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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                  "versionEndExcluding": "6.12.34",
                  "versionStartIncluding": "6.9",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.15.3",
                  "versionStartIncluding": "6.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16",
                  "versionStartIncluding": "6.9",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-28T04:17:50.092Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/81d72f9241d884ec29524431f74f8009310cfa0c"
        },
        {
          "url": "https://git.kernel.org/stable/c/14cbdd64f3870cf0a2d94b87919b9056448c59a0"
        },
        {
          "url": "https://git.kernel.org/stable/c/179c0c7044a378198adb36f2a12410ab68cc730a"
        }
      ],
      "title": "PM: EM: Fix potential division-by-zero error in em_compute_costs()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38297",
    "datePublished": "2025-07-10T07:42:10.918Z",
    "dateReserved": "2025-04-16T04:51:24.002Z",
    "dateUpdated": "2025-07-28T04:17:50.092Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38297\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-07-10T08:15:28.390\",\"lastModified\":\"2025-07-10T13:17:30.017\",\"vulnStatus\":\"Awaiting Analysis\",\"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.\"}],\"metrics\":{},\"references\":[{\"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\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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