{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "dcd6a011a8d523a114af2360a8753de5bd60c139"
            },
            {
              "fixed": "00850f41da24423587abd6124a790dd4f12bcef3"
            },
            {
              "fixed": "8ef3f77c440005c7f04229a75976bfc078364247"
            }
          ],
          "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": "7.0.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64151.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niommupt: Check for missing PAGE_SIZE in the pgsize_bitmap\n\nSashiko pointed out that the driver could drop PAGE_SIZE from the\npgsize_bitmap. That is technically allowed but nothing does it, and\nsuch an iommu_domain would not be used with the DMA API today.\n\nStill, it is against the design and it is trivial to fix up. Lift\nthe PT_WARN_ON to the if branch and just skip the fast path.",
  "id": "CVE-2026-64151",
  "modified": "2026-07-22T05:29:59.104744275Z",
  "published": "2026-07-19T15:40:40.643Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/00850f41da24423587abd6124a790dd4f12bcef3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8ef3f77c440005c7f04229a75976bfc078364247"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64151.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64151"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "iommupt: Check for missing PAGE_SIZE in the pgsize_bitmap"
}