{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "a30b48bf1b244f11bf9b6d20cdccfe0c2264130c"
            },
            {
              "fixed": "24861d04f197bb651e9dfb211978271c15f75a98"
            },
            {
              "fixed": "2c6f81d58741349298f51ff697d988cb42881453"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63953.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/migrate_device: fix pgtable leak in migrate_vma_insert_huge_pmd_page\n\nWhen migrate_vma_insert_huge_pmd_page() jumps to unlock_abort due\nto a PMD check failure, the pgtable allocated earlier via\npte_alloc_one() is never freed, causing a memory leak.\n\nAdded free_abort label to release the pgtable in error path.",
  "id": "CVE-2026-63953",
  "modified": "2026-08-12T03:51:43.183987136Z",
  "published": "2026-07-19T14:55:45.509Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/24861d04f197bb651e9dfb211978271c15f75a98"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2c6f81d58741349298f51ff697d988cb42881453"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63953.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63953"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "mm/migrate_device: fix pgtable leak in migrate_vma_insert_huge_pmd_page"
}