{"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"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["mm/migrate_device.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "26f9ca8ed42cba25d2c75daff13561cce6019395", "status": "affected", "version": "6c287605fd56466e645693eff3ae7c08fba56e0a", "versionType": "git"}, {"lessThan": "5b948706f11a950bc73c5304630d0a7eafc40daf", "status": "affected", "version": "6c287605fd56466e645693eff3ae7c08fba56e0a", "versionType": "git"}, {"lessThan": "86d55447de3738620b9a8272ff167ce97e7f7203", "status": "affected", "version": "6c287605fd56466e645693eff3ae7c08fba56e0a", "versionType": "git"}, {"lessThan": "2be94d6b20789b8865b1864dae5fe458ca85e019", "status": "affected", "version": "6c287605fd56466e645693eff3ae7c08fba56e0a", "versionType": "git"}, {"lessThan": "42f30fa5481a1f90571ccdfbb20d2e25e47ae76e", "status": "affected", "version": "6c287605fd56466e645693eff3ae7c08fba56e0a", "versionType": "git"}, {"lessThan": "63867c82d0c0c2d182016a32b1cc0103116b0ea5", "status": "affected", "version": "6c287605fd56466e645693eff3ae7c08fba56e0a", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["mm/migrate_device.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.19"}, {"lessThan": "5.19", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.184", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.153", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.103", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.44", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.8", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "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."}], "id": "CVE-2026-80686", "lastModified": "2026-08-28T08:16:54.067", "metrics": {}, "published": "2026-08-28T08:16:54.067", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "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"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: mm: migrate_device: fix pte_pfn/pte_dirty called on non-present PTE", "id": "2525467", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2525467"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-824", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nmm: migrate_device: fix pte_pfn/pte_dirty called on non-present PTE\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.", "A flaw was found in the Linux kernel's memory management component. Specifically, the `migrate_device` functionality may attempt to access memory page table entries (PTEs) that are not present. This incorrect handling can lead to system instability, potentially causing a system crash (Denial of Service) or inaccurate accounting of modified memory pages."], "name": "CVE-2026-80686", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-80686\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-80686\nhttps://lore.kernel.org/linux-cve-announce/2026082802-CVE-2026-80686-a4ef@gregkh/T"], "threat_severity": "Moderate"}