KVM Vulnerability in Linux Kernel Affecting Shadow Page Roles

CVE-2026-80726

What is CVE-2026-80726?

A vulnerability exists in the KVM component of the Linux kernel that specifies a failure in handling shadow page roles. This issue arises when creating a child shadow page, where the invalid role of the parent is not checked thoroughly. As a result, it can lead to a use-after-free scenario within the kernel's memory management functions, exposing systems to potential memory corruption and stability issues. The vulnerability emphasizes the importance of validating memory roles to ensure system integrity during virtualization processes.

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