Amd ≫ Epyc 7443 Firmware

Insufficient input validation in the SNP_GUEST_REQUEST command may lead to a potential data abort error and a denial of service.

Insufficient validation of guest context in the SNP Firmware could lead to a potential loss of guest confidentiality.

Improper access controls in System Management Unit (SMU) may allow for an attacker to override performance control tables located in DRAM resulting in a potential lack of system resources.

AMD System Management Unit (SMU) may experience an integer overflow when an invalid length is provided which may result in a potential loss of resources.

Failure to validate VM_HSAVE_PA during SNP_INIT may result in a loss of memory integrity.

Persistent platform private key may not be protected with a random IV leading to a potential “two time pad attack”.

Failure to flush the Translation Lookaside Buffer (TLB) of the I/O memory management unit (IOMMU) may lead an IO device to write to memory it should not be able to access, resulting in a potential loss of integrity.

A potential denial of service (DoS) vulnerability exists in the integrated chipset that may allow a malicious attacker to hang the system when it is rebooted.