CVE-2026-46277

Summary

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

mm/zone_device: do not touch device folio after calling ->folio_free()

The contents of a device folio can immediately change after calling ->folio_free(), as the folio may be reallocated by a driver with a different order. Instead of touching the folio again to extract the pgmap, use the local stack variable when calling percpu_ref_put_many().

Affected Software

Weaknesses

References

• https://git.kernel.org/stable/c/85be0a262e39c706edb53c88af8afde2e98222ba
• https://git.kernel.org/stable/c/39928984956037cabd304321cb8f342e47421db5

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