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

{
  "id": "5934ceee1bf48abdd0594f96149ab06e55a183cd811522f1e43431f7afde9bda",
  "url": "https://osv.dev/vulnerability/CVE-2025-38297",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "PM: EM: Fix potential division-by-zero error in em_compute_costs()",
    "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.",
    "evidence": "osv:CVE-2025-38297",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.12.34",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.15.3",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2025-38297",
      "aliases": [
        "CVE-2025-38297"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "1b600da510735a0f92c8b4140a7e2cb037a6a6c3"
                },
                {
                  "fixed": "81d72f9241d884ec29524431f74f8009310cfa0c"
                },
                {
                  "fixed": "14cbdd64f3870cf0a2d94b87919b9056448c59a0"
                },
                {
                  "fixed": "179c0c7044a378198adb36f2a12410ab68cc730a"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38297.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.9.0"
                },
                {
                  "fixed": "6.12.34"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.15.3"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38297.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.243716031Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/14cbdd64f3870cf0a2d94b87919b9056448c59a0",
        "https://git.kernel.org/stable/c/179c0c7044a378198adb36f2a12410ab68cc730a",
        "https://git.kernel.org/stable/c/81d72f9241d884ec29524431f74f8009310cfa0c",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38297.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-38297",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38297.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-38297",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 517294,
  "published_at": "2025-07-10T07:42:10.918+00:00"
}