{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-80686",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-80686"
  ],
  "published": "2026-08-28T06:53:24Z",
  "summary": "mm: migrate_device: fix pte_pfn/pte_dirty called on non-present PTE",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm: migrate_device: fix pte_pfn/pte_dirty called on non-present PTE\n\npte_pfn() and pte_dirty() have undefined behaviour when called on a\nnon-present PTE. In migrate_vma_collect_pmd(), these functions may be\ninvoked on non-present entries (e.g., device-private entries), leading\nto potential crashes from pte_pfn() or incorrect dirty folio accounting\nfrom pte_dirty(). Fix both by guarding with pte_present() checks.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.184",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-80686"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/26f9ca8ed42cba25d2c75daff13561cce6019395"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/5b948706f11a950bc73c5304630d0a7eafc40daf"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/86d55447de3738620b9a8272ff167ce97e7f7203"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/2be94d6b20789b8865b1864dae5fe458ca85e019"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/42f30fa5481a1f90571ccdfbb20d2e25e47ae76e"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/63867c82d0c0c2d182016a32b1cc0103116b0ea5"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-28T06:53:24Z"
  }
}