pidfs: validate extensible ioctls

{
  "id": "e305fd1fab23c5f3c07e74ede1882a6663159348b6d5b77b8db489bfb4e11913",
  "url": "https://osv.dev/vulnerability/CVE-2025-40217",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "pidfs: validate extensible ioctls",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: pidfs: validate extensible ioctls Validate extensible ioctls stricter than we do now.",
    "evidence": "osv:CVE-2025-40217",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.17.4",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2025-40217",
      "aliases": [
        "CVE-2025-40217"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "5b08bd408534bfb3a7cf5778da5b27d4e4fffe12"
                },
                {
                  "fixed": "bf0fbf5e8b0aff8a4a0fb35e32b10083baa83c04"
                },
                {
                  "fixed": "3c17001b21b9f168c957ced9384abe969019b609"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-40217.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.11.0"
                },
                {
                  "fixed": "6.17.4"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-40217.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:23.598177964Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/3c17001b21b9f168c957ced9384abe969019b609",
        "https://git.kernel.org/stable/c/bf0fbf5e8b0aff8a4a0fb35e32b10083baa83c04",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40217.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-40217",
        "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/2025/40xxx/CVE-2025-40217.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-40217",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 490207,
  "published_at": "2025-12-04T14:50:40.664+00:00"
}