CVE-2026-80686

{
  "id": "CVE-2026-80686",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-08-28T08:16:54.067",
  "lastModified": "2026-11-06T17:19:56.513",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "mm/migrate_device.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6c287605fd56466e645693eff3ae7c08fba56e0a",
              "lessThan": "26f9ca8ed42cba25d2c75daff13561cce6019395",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "6c287605fd56466e645693eff3ae7c08fba56e0a",
              "lessThan": "5b948706f11a950bc73c5304630d0a7eafc40daf",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "6c287605fd56466e645693eff3ae7c08fba56e0a",
              "lessThan": "86d55447de3738620b9a8272ff167ce97e7f7203",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "6c287605fd56466e645693eff3ae7c08fba56e0a",
              "lessThan": "2be94d6b20789b8865b1864dae5fe458ca85e019",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "6c287605fd56466e645693eff3ae7c08fba56e0a",
              "lessThan": "42f30fa5481a1f90571ccdfbb20d2e25e47ae76e",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "6c287605fd56466e645693eff3ae7c08fba56e0a",
              "lessThan": "63867c82d0c0c2d182016a32b1cc0103116b0ea5",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "mm/migrate_device.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "5.19",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "5.19",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.1.184",
              "lessThanOrEqual": "6.1.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.6.153",
              "lessThanOrEqual": "6.6.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.103",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.44",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.1.8",
              "lessThanOrEqual": "7.1.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-11-06T17:02:42.819788Z",
          "id": "CVE-2026-80686",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/26f9ca8ed42cba25d2c75daff13561cce6019395",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/2be94d6b20789b8865b1864dae5fe458ca85e019",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/42f30fa5481a1f90571ccdfbb20d2e25e47ae76e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/5b948706f11a950bc73c5304630d0a7eafc40daf",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/63867c82d0c0c2d182016a32b1cc0103116b0ea5",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/86d55447de3738620b9a8272ff167ce97e7f7203",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}