Volodymyr Pikhur

A potential weakness in AMD SPI protection features may allow a malicious attacker with Ring0 (kernel mode) access to bypass the native System Management Mode (SMM) ROM protections. This issue is related to insufficient protection of service data and may allow an attacker to bypass security restrictions, elevate privileges, or execute arbitrary code. The flaw potentially impacts millions of devices worldwide.

A potential denial of service issue exists that may allow a malicious attacker to hang the system when it is rebooted.

The issue is related to Microarchitectural Fill Buffer Data Sampling (MFBDS), which may allow an authenticated user to potentially enable information disclosure via a side channel with local access. This is due to the speculative execution utilized by some microprocessors.