Riskcovery

CVE-2026-46277

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

State
Published
Severity
7.8 High
Published
Jun 8, 2026
Updated
Aug 5, 2026
Reserved
May 13, 2026

Read the record on cve.org

Description

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().

Scores

CVSSScoreVectorSource
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • d245f9b4ab806733a77e51a218ca7b8bc3135cd9 to before 85be0a262e39c706edb53c88af8afde2e98222baAffected
  • d245f9b4ab806733a77e51a218ca7b8bc3135cd9 to before 39928984956037cabd304321cb8f342e47421db5Affected
LinuxLinux
  • 6.19Affected
  • before 6.19Not affected
  • 7.0.4 through 7.0.*Not affected
  • 7.1 and laterNot affected

References

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