{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-80686",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-26T14:34:25.784Z",
        "datePublished": "2026-08-28T06:52:51.924Z",
        "dateUpdated": "2026-08-28T06:52:51.924Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-28T06:52:51.924Z"
            },
            "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": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "mm/migrate_device.c"
                    ],
                    "versions": [
                        {
                            "version": "6c287605fd56466e645693eff3ae7c08fba56e0a",
                            "lessThan": "26f9ca8ed42cba25d2c75daff13561cce6019395",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6c287605fd56466e645693eff3ae7c08fba56e0a",
                            "lessThan": "5b948706f11a950bc73c5304630d0a7eafc40daf",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6c287605fd56466e645693eff3ae7c08fba56e0a",
                            "lessThan": "86d55447de3738620b9a8272ff167ce97e7f7203",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6c287605fd56466e645693eff3ae7c08fba56e0a",
                            "lessThan": "2be94d6b20789b8865b1864dae5fe458ca85e019",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6c287605fd56466e645693eff3ae7c08fba56e0a",
                            "lessThan": "42f30fa5481a1f90571ccdfbb20d2e25e47ae76e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6c287605fd56466e645693eff3ae7c08fba56e0a",
                            "lessThan": "63867c82d0c0c2d182016a32b1cc0103116b0ea5",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "mm/migrate_device.c"
                    ],
                    "versions": [
                        {
                            "version": "5.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.19",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.184",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.153",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.103",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.44",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.8",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.19",
                                    "versionEndExcluding": "6.1.184"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.19",
                                    "versionEndExcluding": "6.6.153"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.19",
                                    "versionEndExcluding": "6.12.103"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.19",
                                    "versionEndExcluding": "6.18.44"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.19",
                                    "versionEndExcluding": "7.1.8"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.19",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/26f9ca8ed42cba25d2c75daff13561cce6019395"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5b948706f11a950bc73c5304630d0a7eafc40daf"
                },
                {
                    "url": "https://git.kernel.org/stable/c/86d55447de3738620b9a8272ff167ce97e7f7203"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2be94d6b20789b8865b1864dae5fe458ca85e019"
                },
                {
                    "url": "https://git.kernel.org/stable/c/42f30fa5481a1f90571ccdfbb20d2e25e47ae76e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/63867c82d0c0c2d182016a32b1cc0103116b0ea5"
                }
            ],
            "title": "mm: migrate_device: fix pte_pfn/pte_dirty called on non-present PTE",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}