userfaultfd: change src_folio after ensuring it's unpinned in UFFDIO_MOVE

{
  "id": "a337c33df1652981ac156bdb9c935c5663a8ba0bcb95c15e1907d6b01d0537aa",
  "url": "https://osv.dev/vulnerability/CVE-2024-27007",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "userfaultfd: change src_folio after ensuring it's unpinned in UFFDIO_MOVE",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: userfaultfd: change src_folio after ensuring it's unpinned in UFFDIO_MOVE Commit d7a08838ab74 (\"mm: userfaultfd: fix unexpected change to src_folio when UFFDIO_MOVE fails\") moved the src_folio->{mapping, index} changing to after clearing the page-table and ensuring that it's not pinned. This avoids failure of swapout+migration and possibly memory corruption. However, the commit missed fixing it in the huge-page case.",
    "evidence": "osv:CVE-2024-27007",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.8.8",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2024-27007",
      "aliases": [
        "CVE-2024-27007"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "adef440691bab824e39c1b17382322d195e1fab0"
                },
                {
                  "fixed": "df5f6e683e7f21a15d8be6e7a0c7a46436963ebe"
                },
                {
                  "fixed": "c0205eaf3af9f5db14d4b5ee4abacf4a583c3c50"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-27007.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.8.0"
                },
                {
                  "fixed": "6.8.8"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-27007.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:23.590640210Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/c0205eaf3af9f5db14d4b5ee4abacf4a583c3c50",
        "https://git.kernel.org/stable/c/df5f6e683e7f21a15d8be6e7a0c7a46436963ebe",
        "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EZ6PJW7VOZ224TD7N4JZNU6KV32ZJ53/",
        "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DAMSOZXJEPUOXW33WZYWCVAY7Z5S7OOY/",
        "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GCBZZEC7L7KTWWAS2NLJK6SO3IZIL4WW/",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/27xxx/CVE-2024-27007.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-27007",
        "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/2024/27xxx/CVE-2024-27007.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-27007",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 489900,
  "published_at": "2024-05-01T05:29:08.528+00:00"
}