Ryzen 1200 (Af) Firmware Security Vulnerabilities

CVE-2021-46749

Insufficient bounds checking in ASP (AMD SecureProcessor) may allow for an out of bounds read in SMI (System ManagementInterface) mailbox checksum calculation triggering a data abort, resulting in apotential denial of service.

CVE-2021-46753

Failure to validate the length fields of the ASP(AMD Secure Processor) sensor fusion hub headers may allow an attacker with amalicious Uapp or ABL to map the ASP sensor fusion hub region and overwritedata structures leading to a potential loss of confidentiality and integrity.

CVE-2021-46754

Insufficient input validation in the ASP (AMDSecure Processor) bootloader may allow an attacker with a compromised Uapp orABL to coerce the bootloader into exposing sensitive information to the SMU(System Management Unit) resulting in a potential loss of confidentiality andintegrity.

CVE-2021-46759

Improper syscall input validation in AMD TEE(Trusted Execution Environment) may allow an attacker with physical access andcontrol of a Uapp that runs under the bootloader to reveal the contents of theASP (AMD Secure Processor) bootloader accessible memory to a serial port,resulting in a potential l...

CVE-2021-46773

Insufficient input validation in ABL may enablea privileged attacker to corrupt ASP memory, potentially resulting in a loss ofintegrity or code execution.

CVE-2021-46792

Time-of-check Time-of-use (TOCTOU) in theBIOS2PSP command may allow an attacker with a malicious BIOS to create a racecondition causing the ASP bootloader to perform out-of-bounds SRAM reads uponan S3 resume event potentially leading to a denial of service.

CVE-2021-46794

Insufficient bounds checking in ASP (AMD SecureProcessor) may allow for an out of bounds read in SMI (System ManagementInterface) mailbox checksum calculation triggering a data abort, resulting in apotential denial of service.