CVE-2026-80686mm: migrate_device: fix pte_pfn/pte_dirty called on non-present PTE
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Aug 28, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 6c287605fd56466e645693eff3ae7c08fba56e0a before 26f9ca8ed42cba25d2c75daff13561cce6019395; 6c287605fd56466e645693eff3ae7c08fba56e0a builds before 5b948706f11a950bc73c5304630d0a7eafc40daf; from 6c287605fd56466e645693eff3ae7c08fba56e0a before 86d55447de3738620b9a8272ff167ce97e7f7203; 6c287605fd56466e645693eff3ae7c08fba56e0a builds before 2be94d6b20789b8865b1864dae5fe458ca85e019; from 6c287605fd56466e645693eff3ae7c08fba56e0a before 42f30fa5481a1f90571ccdfbb20d2e25e47ae76e; from 6c287605fd56466e645693eff3ae7c08fba56e0a before 63867c82d0c0c2d182016a32b1cc0103116b0ea5 | CNA record |
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
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.