{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "1a919b17ef012ca0572bae759c27e5ea02bfb47f"
            },
            {
              "fixed": "e5dd2a91a7ae3a276e6d79806127e923936e241b"
            },
            {
              "fixed": "22df195bff84300a3f04813d6148765c77ac565a"
            },
            {
              "fixed": "3a8c562892b96f35bba1e00d5e455a15963bbb92"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.19.0"
            },
            {
              "fixed": "6.18.55"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98466.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: Transfer the hyp stack pages out of the host stage-2\n\nfix_host_ownership() walks only the linear-map alias of each memblock\nregion, and the per-CPU hyp stack, mapped in the private VA range for\nits guard page, has none.\n\nWalk each stack's VA range with the same walker.",
  "id": "CVE-2026-98466",
  "modified": "2026-10-20T02:30:35.033794863Z",
  "published": "2026-10-18T15:15:18.414Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/22df195bff84300a3f04813d6148765c77ac565a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3a8c562892b96f35bba1e00d5e455a15963bbb92"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e5dd2a91a7ae3a276e6d79806127e923936e241b"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98466.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98466"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "KVM: arm64: Transfer the hyp stack pages out of the host stage-2"
}