The vulnerability of the walk_pud_range() function in the mm/pagewalk.c module of the Linux kernel’s memory management subsystem allows a hacker to cause a service failure.

The vulnerability of the walkpudrange function in the mm/pagewalk.c module of the Linux kernel’s memory management subsystem is related to synchronization errors when using shared resources. Exploiting this vulnerability can allow an attacker to cause a service failure...

CVE-2026-31456: Concurrent Execution using Shared Resource with Improper Synchronization

In the Linux kernel, the following vulnerability has been resolved: mm/pagewalk: fix race between concurrent split and refault The splitting of a PUD entry in walkpudrange can race with a concurrent thread refaulting the PUD leaf entry causing it to try walking a PMD range that has disappeared. A...