Amd Epyc 7473X Firmware vulnerabilities

CVE-2021-26364 [MEDIUM] CWE-119 CVE-2021-26364: Insufficient bounds checking in an SMU mailbox register could allow an attacker to potentially read Insufficient bounds checking in an SMU mailbox register could allow an attacker to potentially read outside of the SRAM address range which could result in an exception handling leading to a potential denial of service.

CVE-2021-26388 [MEDIUM] CWE-125 CVE-2021-26388: Improper validation of the BIOS directory may allow for searches to read beyond the directory table Improper validation of the BIOS directory may allow for searches to read beyond the directory table copy in RAM, exposing out of bounds memory contents, resulting in a potential denial of service.

CVE-2021-26378 [MEDIUM] CWE-119 CVE-2021-26378: Insufficient bound checks in the System Management Unit (SMU) may result in access to an invalid add Insufficient bound checks in the System Management Unit (SMU) may result in access to an invalid address space that could result in denial of service.

CVE-2021-26376 [MEDIUM] CVE-2021-26376: Insufficient checks in System Management Unit (SMU) FeatureConfig may result in reenabling features Insufficient checks in System Management Unit (SMU) FeatureConfig may result in reenabling features potentially resulting in denial of resources and/or denial of service.

CVE-2021-26375 [MEDIUM] CVE-2021-26375: Insufficient General Purpose IO (GPIO) bounds check in System Management Unit (SMU) may result in ac Insufficient General Purpose IO (GPIO) bounds check in System Management Unit (SMU) may result in access/updates from/to invalid address space that could result in denial of service.

CVE-2021-26342 [LOW] CVE-2021-26342: In SEV guest VMs, the CPU may fail to flush the Translation Lookaside Buffer (TLB) following a parti In SEV guest VMs, the CPU may fail to flush the Translation Lookaside Buffer (TLB) following a particular sequence of operations that includes creation of a new virtual machine control block (VMCB). The failure to flush the TLB may cause the microcode to use stale TLB translations which may allow for disclosure of SEV guest memory contents. Users of SEV-ES/SEV

CVE-2021-26324 [HIGH] CVE-2021-26324: A bug with the SEV-ES TMR may lead to a potential loss of memory integrity for SNP-active VMs. A bug with the SEV-ES TMR may lead to a potential loss of memory integrity for SNP-active VMs.

CVE-2021-46771 [HIGH] CWE-20 CVE-2021-46771: Insufficient validation of addresses in AMD Secure Processor (ASP) firmware system call may potentia Insufficient validation of addresses in AMD Secure Processor (ASP) firmware system call may potentially lead to arbitrary code execution by a compromised user application.

CVE-2021-26353 [HIGH] CWE-665 CVE-2021-26353: Failure to validate inputs in SMM may allow an attacker to create a mishandled error leaving the DRT Failure to validate inputs in SMM may allow an attacker to create a mishandled error leaving the DRTM UApp in a partially initialized state potentially resulting in loss of memory integrity.

CVE-2021-26332 [HIGH] CVE-2021-26332: Failure to verify SEV-ES TMR is not in MMIO space, SEV-ES FW could result in a potential loss of int Failure to verify SEV-ES TMR is not in MMIO space, SEV-ES FW could result in a potential loss of integrity or availability.

CVE-2021-26370 [HIGH] CWE-20 CVE-2021-26370: Improper validation of destination address in SVC_LOAD_FW_IMAGE_BY_INSTANCE and SVC_LOAD_BINARY_BY_A Improper validation of destination address in SVC_LOAD_FW_IMAGE_BY_INSTANCE and SVC_LOAD_BINARY_BY_ATTRIB in a malicious UApp or ABL may allow an attacker to overwrite arbitrary bootloader memory with SPI ROM contents resulting in a loss of integrity and availability.