AMD Secure Processor (ASP) vulnerabilities

Improper restriction of operations within the bounds of a memory buffer in the AMD secure processor (ASP) could allow an attacker to read or write to protected memory potentially resulting in arbitrary code execution.

Improperly preserved integrity of hardware configuration state during a power save/restore operation in the AMD Secure Processor (ASP) could allow an attacker with the ability to write outside the trusted memory range (TMR) to change the execution flow of the Video Core Next (VCN) firmware.

The lack of lock bit protection for NBIO registers may allow a local admin-privileged attacker to gain arbitrary access to the System Management Network (SMN), potentially leading to arbitrary code execution in the AMD Secure Processor (ASP) and loss of confidentiality and integrity for SEV-SNP guests.

An observable timing discrepancy in the ASP could allow a privileged attacker to perform a brute-force attack against the hash message authentication code, allowing the input of an arbitrary message, potentially leading to a loss of data integrity.

An observable timing discrepancy in the ASP could allow a privileged attacker to perform a brute-force attack against the hash message authentication code, allowing arbitrary message input, potentially leading to a loss of data integrity.