Linux Kernel Vulnerability in KVM State Management
CVE-2026-23005

Currently unrated

Key Information:

Vendor: Linux
Status: Linux
Vendor: CVE Published:; 25 January 2026

What is CVE-2026-23005?

A flaw has been identified in the Linux kernel related to virtual machine state management through KVM. When handling guest XSAVE state via KVM_SET_XSAVE, inconsistencies may arise if the XFD settings are not correctly synchronized with XSTATE_BV. This can lead to kernel panics when the XRSTOR instruction attempts to load a state that is disabled via the guest's XFD. Therefore, it is crucial to ensure that XSTATE_BV is accurately cleared for features disabled by the XFD to prevent system crashes and maintain stability within virtual environments.

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