Fpstate Vso -

The original FPU lazy restore vulnerability (CVE-2018-3665) allowed a malicious process to read FPU state from another process (including cryptographic keys in FPU registers). VSO is a mitigation enabler but not a silver bullet.

However, its components— and vDSO (often mistyped as vso)—refer to critical low-level mechanisms in the Linux kernel responsible for performance and hardware management. Understanding the Core Components fpstate vso