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().

A flaw was found in the Linux kernel's memory management, specifically within the `mm/zone_device` component. This vulnerability arises when a device folio is accessed after it has been freed and potentially reallocated by a driver. This can lead to memory corruption, which a local attacker could potentially leverage to cause a denial of service (DoS) or achieve other impacts.

Red Hat Enterprise Linux 10 Not affected kernel Red Hat Enterprise Linux 6 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel-rt Red Hat Enterprise Linux 8 Not affected kernel Red Hat Enterprise Linux 8 Not affected kernel-rt Red Hat Enterprise Linux 9 Not affected kernel Red Hat Enterprise Linux 9 Not affected kernel-rt https://www.cve.org/CVERecord?id=CVE-2026-46277 https://nvd.nist.gov/vuln/detail/CVE-2026-46277 https://lore.kernel.org/linux-cve-announce/2026060841-CVE-2026-46277-f398@gregkh/T