CVE-2026-46277
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 versions
Linux kernel versions
6.19
and later are affected. Fixed in
7.0.4,
7.1-rc1
and their respective stable series.
References
2 totalFrequently asked questions
-
What is CVE-2026-46277?
CVE-2026-46277 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.19 onward and has been patched in 7.0.4 and 7.1-rc1. CVE-2026-46277 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
-
Is there a patch available for CVE-2026-46277?
Yes — CVE-2026-46277 has been patched. Fixed versions include 7.0.4 and 7.1-rc1. If you are running Linux kernel 6.19 or later up to the fix versions, apply the relevant patch for your kernel branch.
-
Is CVE-2026-46277 actively exploited?
No — CVE-2026-46277 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.