{"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"}}}}