mm: migrate_device: fix pte_pfn/pte_dirty called on non-present PTE (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.17 % · percentile 7 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
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.
References
- 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
European references
- ENISA EUVD · EUVD-2026-67562
- GCVE · GCVE-0-2026-80686
CERT-FR advisories
- CERTFR-2026-AVI-1372 — Multiples vulnérabilités dans les produits SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1335 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1232 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1163 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 6c287605fd56466e645693eff3ae7c08fba56e0a < 26f9ca8ed42cba25d2c75daff13561cce6019395 ; affected 6c287605fd56466e645693eff3ae7c08fba56e0a < 5b948706f11a950bc73c5304630d0a7eafc40daf ; affected 6c287605fd56466e645693eff3ae7c08fba56e0a < 86d55447de3738620b9a8272ff167ce97e7f7203 ; affected 6c287605fd56466e645693eff3ae7c08fba56e0a < 2be94d6b20789b8865b1864dae5fe458ca85e019 ; affected 6c287605fd56466e645693eff3ae7c08fba56e0a < 42f30fa5481a1f90571ccdfbb20d2e25e47ae76e ; affected 6c287605fd56466e645693eff3ae7c08fba56e0a < 63867c82d0c0c2d182016a32b1cc0103116b0ea5 |
| Linux · Linux | affected 5.19 ; unaffected 0 < 5.19 ; unaffected 6.1.184 ≤ 6.1.* ; unaffected 6.6.153 ≤ 6.6.* ; unaffected 6.12.103 ≤ 6.12.* ; unaffected 6.18.44 ≤ 6.18.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |