Epyc 7601 Firmware

Improper or unexpected behavior of the INVD instruction in some AMD CPUs may allow an attacker with a malicious hypervisor to affect cache line write-back behavior of the CPU leading to a potential. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Insufficient input validation in the ASP Bootloader may enable a privileged attacker with physical access to expose the contents of ASP memory potentially leading to a loss of confidentiality. Rated medium severity (CVSS 4.6), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

TOCTOU in the ASP Bootloader may allow an attacker with physical access to tamper with SPI ROM records after memory content verification, potentially leading to loss of confidentiality or a denial of. Rated medium severity (CVSS 5.7), this vulnerability is no authentication required. No vendor patch available.

A division-by-zero error on some AMD processors can potentially return speculative data resulting in loss of confidentiality. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.

A potential power side-channel vulnerability in some AMD processors may allow an authenticated attacker to use the power reporting functionality to monitor a program’s execution inside an AMD SEV VM. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Improper access control settings in ASP Bootloader may allow an attacker to corrupt the return address causing a stack-based buffer overrun potentially leading to arbitrary code execution. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Improper syscall input validation in the ASP Bootloader may allow a privileged attacker to read memory out-of-bounds, potentially leading to a denial-of-service. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

IBPB may not prevent return branch predictions from being specified by pre-IBPB branch targets leading to a potential information disclosure. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.

Aliases in the branch predictor may cause some AMD processors to predict the wrong branch type potentially leading to information disclosure. Rated medium severity (CVSS 6.5), this vulnerability is low attack complexity. No vendor patch available.

Mis-trained branch predictions for return instructions may allow arbitrary speculative code execution under certain microarchitecture-dependent conditions. Rated medium severity (CVSS 6.5), this vulnerability is low attack complexity. No vendor patch available.

A potential vulnerability in some AMD processors using frequency scaling may allow an authenticated attacker to execute a timing attack to potentially enable information disclosure. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

A malicious hypervisor in conjunction with an unprivileged attacker process inside an SEV/SEV-ES guest VM may fail to flush the Translation Lookaside Buffer (TLB) resulting in unexpected behavior. Rated high severity (CVSS 8.4), this vulnerability is low attack complexity. No vendor patch available.

Improper input and range checking in the AMD Secure Processor (ASP) boot loader image header may allow an attacker to use attacker-controlled values prior to signature validation potentially. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.

AMD System Management Unit (SMU) contains a potential issue where a malicious user may be able to manipulate mailbox entries leading to arbitrary code execution. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.

AMD System Management Unit (SMU) may experience a heap-based overflow which may result in a loss of resources. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.

Insufficient ID command validation in the SEV Firmware may allow a local authenticated attacker to perform a denial of service of the PSP. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.

Insufficient validation of the AMD SEV Signing Key (ASK) in the SEND_START command in the SEV Firmware may allow a local authenticated attacker to perform a denial of service of the PSP. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.

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. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.

Persistent platform private key may not be protected with a random IV leading to a potential “two time pad attack”. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

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. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.