Spike Risc-V Isa Simulator Security Vulnerabilities

CVE-2022-34642

The component mcontrol.action in RISCV ISA Sim commit ac466a21df442c59962589ba296c702631e041b5 contains the incorrect mask which can cause a Denial of Service (DoS).

CVE-2022-34643

RISCV ISA Sim commit ac466a21df442c59962589ba296c702631e041b5 implements the incorrect exception priotrity when accessing memory.