mm/migrate_device: fix spinlock leak in migrate_vma_insert_huge_pmd_page

{
  "id": "ad4c161b11b69397b2877b3f039555f67604c5dbe2637116bf935a3ed2e5314d",
  "url": "https://osv.dev/vulnerability/CVE-2026-64129",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "mm/migrate_device: fix spinlock leak in migrate_vma_insert_huge_pmd_page",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: mm/migrate_device: fix spinlock leak in migrate_vma_insert_huge_pmd_page When check_stable_address_space() fails after the PMD spinlock has been acquired via pmd_lock(), the code jumps directly to the abort label, bypassing the spin_unlock() call in unlock_abort. This causes the PMD spinlock to be permanently held, leading to a deadlock. Change the goto target from abort to unlock_abort to ensure the spinlock is always released on this error path.",
    "evidence": "osv:CVE-2026-64129",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.0.11",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-64129",
      "aliases": [
        "CVE-2026-64129"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "a30b48bf1b244f11bf9b6d20cdccfe0c2264130c"
                },
                {
                  "fixed": "c715f7ccf7a294c058667b678a4ba50fad933c62"
                },
                {
                  "fixed": "63451de16e0a08be40f9ab5e7c5c8f5c79676fb1"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64129.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.0.11"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64129.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:45.585287515Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/63451de16e0a08be40f9ab5e7c5c8f5c79676fb1",
        "https://git.kernel.org/stable/c/c715f7ccf7a294c058667b678a4ba50fad933c62",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64129.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-64129",
        "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/2026/64xxx/CVE-2026-64129.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-64129",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 513557,
  "published_at": "2026-07-19T15:40:25.385+00:00"
}