CVE-2025-40224 (GCVE-0-2025-40224)

Vulnerability from cvelistv5 – Published: 2025-12-04 15:31 – Updated: 2026-05-11 21:45
VLAI
Title
hwmon: (cgbc-hwmon) Add missing NULL check after devm_kzalloc()
Summary
In the Linux kernel, the following vulnerability has been resolved: hwmon: (cgbc-hwmon) Add missing NULL check after devm_kzalloc() The driver allocates memory for sensor data using devm_kzalloc(), but did not check if the allocation succeeded. In case of memory allocation failure, dereferencing the NULL pointer would lead to a kernel crash. Add a NULL pointer check and return -ENOMEM to handle allocation failure properly.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7061 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 08ebc9def79fc0c4dbb6ecc39263006e3f98b750 , < 240b82b86a091c1aa49d951d4467425420a081a0 (git)
Affected: 08ebc9def79fc0c4dbb6ecc39263006e3f98b750 , < a09a5aa8bf258ddc99a22c30f17fe304b96b5350 (git)
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Linux Linux Affected: 6.15
Unaffected: 0 , < 6.15 (semver)
Unaffected: 6.17.6 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
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          "product": "Linux",
          "programFiles": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (cgbc-hwmon) Add missing NULL check after devm_kzalloc()\n\nThe driver allocates memory for sensor data using devm_kzalloc(), but\ndid not check if the allocation succeeded. In case of memory allocation\nfailure, dereferencing the NULL pointer would lead to a kernel crash.\n\nAdd a NULL pointer check and return -ENOMEM to handle allocation failure\nproperly."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:45:11.677Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/240b82b86a091c1aa49d951d4467425420a081a0"
        },
        {
          "url": "https://git.kernel.org/stable/c/a09a5aa8bf258ddc99a22c30f17fe304b96b5350"
        }
      ],
      "title": "hwmon: (cgbc-hwmon) Add missing NULL check after devm_kzalloc()",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40224",
    "datePublished": "2025-12-04T15:31:16.193Z",
    "dateReserved": "2025-04-16T07:20:57.180Z",
    "dateUpdated": "2026-05-11T21:45:11.677Z",
    "state": "PUBLISHED"
  },
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      "date": "2026-10-23",
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      "percentile": "0.07817"
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          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (cgbc-hwmon) Add missing NULL check after devm_kzalloc()\n\nThe driver allocates memory for sensor data using devm_kzalloc(), but\ndid not check if the allocation succeeded. In case of memory allocation\nfailure, dereferencing the NULL pointer would lead to a kernel crash.\n\nAdd a NULL pointer check and return -ENOMEM to handle allocation failure\nproperly."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nhwmon: (cgbc-hwmon) A\u00f1adir la comprobaci\u00f3n de NULL faltante despu\u00e9s de devm_kzalloc()\n\nEl controlador asigna memoria para datos de sensor usando devm_kzalloc(), pero no comprob\u00f3 si la asignaci\u00f3n tuvo \u00e9xito. En caso de fallo en la asignaci\u00f3n de memoria, desreferenciar el puntero NULL llevar\u00eda a una ca\u00edda del kernel.\n\nA\u00f1adir una comprobaci\u00f3n de puntero NULL y devolver -ENOMEM para manejar el fallo de asignaci\u00f3n correctamente."
          }
        ],
        "id": "CVE-2025-40224",
        "lastModified": "2026-10-19T19:10:00.130",
        "metrics": {},
        "published": "2025-12-04T16:16:14.917",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/240b82b86a091c1aa49d951d4467425420a081a0"
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        "vulnStatus": "Deferred"
      }
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    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:17:06+00:00",
      "cve": "CVE-2025-40224",
      "id": "CVE-2025-40224",
      "initial_release_date": "2025-12-04T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: hwmon: (cgbc-hwmon) Add missing NULL check after devm_kzalloc()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-40224.json",
      "version": "3"
    }
  }
}



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