Name of the Vulnerable Software and Affected Versions Linux Kernel versions prior to v5.4.128

Description The issue concerns the KVM LAPIC, where a guard was not properly restored, potentially allowing illegal APIC register access. The actual impact and attack plausibility have not yet been proven.

Recommendations For Linux Kernel versions prior to v5.4.128, update to version v5.4.128 or later to resolve the issue.