Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 6c287605fd56466e645693eff3ae7c08fba56e0a before 26f9ca8ed42cba25d2c75daff13561cce6019395; affected 6c287605fd56466e645693eff3ae7c08fba56e0a before 5b948706f11a950bc73c5304630d0a7eafc40daf; affected 6c287605fd56466e645693eff3ae7c08fba56e0a before 86d55447de3738620b9a8272ff167ce97e7f7203; affected 6c287605fd56466e645693eff3ae7c08fba56e0a before 2be94d6b20789b8865b1864dae5fe458ca85e019; affected 6c287605fd56466e645693eff3ae7c08fba56e0a before 42f30fa5481a1f90571ccdfbb20d2e25e47ae76e; affected 6c287605fd56466e645693eff3ae7c08fba56e0a before 63867c82d0c0c2d182016a32b1cc0103116b0ea5 |
| Linux / Linux | affected 5.19; unaffected 0 before 5.19; unaffected 6.1.184 through 6.1.*; unaffected 6.6.153 through 6.6.*; unaffected 6.12.103 through 6.12.*; unaffected 6.18.44 through 6.18.*; unaffected 7.1.8 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
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