mm/huge_memory: drop beyond-EOF folios with the right number of refs

{
  "id": "35d7f5caae8a14e2214b2e9c53f7ff0530660c0c9755e5e5f04affaebc61bff8",
  "url": "https://osv.dev/vulnerability/CVE-2025-22000",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "mm/huge_memory: drop beyond-EOF folios with the right number of refs",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: mm/huge_memory: drop beyond-EOF folios with the right number of refs When an after-split folio is large and needs to be dropped due to EOF, folio_put_refs(folio, folio_nr_pages(folio)) should be used to drop all page cache refs. Otherwise, the folio will not be freed, causing memory leak. This leak would happen on a filesystem with blocksize > page_size and a truncate is performed, where the blocksize makes folios split to >0 order ones, causing truncated folios not being freed.",
    "evidence": "osv:CVE-2025-22000",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.12.21",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.13.9",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2025-22000",
      "aliases": [
        "CVE-2025-22000"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c010d47f107f609b9f4d6a103b6dfc53889049e9"
                },
                {
                  "fixed": "86368616a9ce51f6b41efa251b6e066893851d67"
                },
                {
                  "fixed": "92ad820a1f2d95d5a8d6c2bd3f391bbb068a5f9e"
                },
                {
                  "fixed": "14efb4793519d73fb2902bb0ece319b886e4b4b9"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-22000.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.9.0"
                },
                {
                  "fixed": "6.12.21"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.13.9"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-22000.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:22.269634859Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/14efb4793519d73fb2902bb0ece319b886e4b4b9",
        "https://git.kernel.org/stable/c/86368616a9ce51f6b41efa251b6e066893851d67",
        "https://git.kernel.org/stable/c/92ad820a1f2d95d5a8d6c2bd3f391bbb068a5f9e",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/22xxx/CVE-2025-22000.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-22000",
        "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/2025/22xxx/CVE-2025-22000.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-22000",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 488442,
  "published_at": "2025-04-03T07:19:03.652+00:00"
}