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CVE-2026-80686

mm: migrate_device: fix pte_pfn/pte_dirty called on non-present PTE

In the Linux kernel, the following vulnerability has been resolved:

mm: migrate_device: fix pte_pfn/pte_dirty called on non-present PTE

pte_pfn() and pte_dirty() have undefined behaviour when called on a
non-present PTE. In migrate_vma_collect_pmd(), these functions may be
invoked on non-present entries (e.g., device-private entries), leading
to potential crashes from pte_pfn() or incorrect dirty folio accounting
from pte_dirty(). Fix both by guarding with pte_present() checks.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 6c287605fd56466e645693eff3ae7c08fba56e0a
Version < 26f9ca8ed42cba25d2c75daff13561cce6019395
Status affected
Version 6c287605fd56466e645693eff3ae7c08fba56e0a
Version < 5b948706f11a950bc73c5304630d0a7eafc40daf
Status affected
Version 6c287605fd56466e645693eff3ae7c08fba56e0a
Version < 86d55447de3738620b9a8272ff167ce97e7f7203
Status affected
Version 6c287605fd56466e645693eff3ae7c08fba56e0a
Version < 2be94d6b20789b8865b1864dae5fe458ca85e019
Status affected
Version 6c287605fd56466e645693eff3ae7c08fba56e0a
Version < 42f30fa5481a1f90571ccdfbb20d2e25e47ae76e
Status affected
Version 6c287605fd56466e645693eff3ae7c08fba56e0a
Version < 63867c82d0c0c2d182016a32b1cc0103116b0ea5
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 5.19
Status affected
Version 0
Version < 5.19
Status unaffected
Version <= 6.1.*
Version 6.1.184
Status unaffected
Version <= 6.6.*
Version 6.6.153
Status unaffected
Version <= 6.12.*
Version 6.12.103
Status unaffected
Version <= 6.18.*
Version 6.18.44
Status unaffected
Version <= 7.1.*
Version 7.1.8
Status unaffected
Version <= *
Version 7.2
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.17% 0.068
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/26f9ca8ed42cba25d2c75daff13561cce6019395
https://git.kernel.org/stable/c/5b948706f11a950bc73c5304630d0a7eafc40daf
https://git.kernel.org/stable/c/86d55447de3738620b9a8272ff167ce97e7f7203
https://git.kernel.org/stable/c/2be94d6b20789b8865b1864dae5fe458ca85e019
https://git.kernel.org/stable/c/42f30fa5481a1f90571ccdfbb20d2e25e47ae76e
https://git.kernel.org/stable/c/63867c82d0c0c2d182016a32b1cc0103116b0ea5