CVE-2026-46277

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

HIGH
7.8
CVSS Score
Published: June 8, 2026 at 03:41 PM UTC
Updated: August 5, 2026 at 01:24 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.1%

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().

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.19 ≤ v < 7.0.46.19 ≤ v < 7.16.19d245f9b4ab806733a77e51a218ca7b8bc3135cd9
Vendor states this is fixed in 39928984956037cabd304321cb8f342e47421db5 (fixed)
Vendor states this is fixed in 85be0a262e39c706edb53c88af8afde2e98222ba (fixed)
Vendor states this is fixed in 6.19 (unaffected)
Vendor states this is fixed in 7.0.4 (unaffected)
Vendor states this is fixed in 7.1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusANALYZED
CWE
NVD-CWE-noinfo

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