CVSS: 6.5EPSS: 0%CPEs: 138EXPL: 0CVE-2023-20592 – hw: amd: INVD instruction may lead to a loss of SEV-ES guest machine memory integrity problem
https://notcve.org/view.php?id=CVE-2023-20592
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 loss of guest virtual machine (VM) memory integrity. El comportamiento inadecuado o inesperado de la instrucción INVD en algunas CPU AMD puede permitir que un atacante con un hipervisor malicioso afecte el comportamiento de reescritura de la línea de caché de la CPU, lo que provocará una posible pérdida de la integridad de la memoria de la máquina virtual invitada (VM). A flaw was found in some of AMD CPU's due to improper or unexpected behavior of the INVD. This issue may allow an attacker with a malicious hypervisor to affect cache line write-back behavior of the CPU, potentially leading to a loss of guest virtual machine (VM) memory integrity. • https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3005 https://access.redhat.com/security/cve/CVE-2023-20592 https://bugzilla.redhat.com/show_bug.cgi?id=2244590 • CWE-221: Information Loss or Omission •
CVSS: 4.6EPSS: 0%CPEs: 146EXPL: 0CVE-2023-20526
https://notcve.org/view.php?id=CVE-2023-20526
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. Una validación de entrada insuficiente en el ASP Bootloader puede permitir que un atacante privilegiado con acceso físico exponga el contenido de la memoria ASP, lo que podría provocar una pérdida de confidencialidad. • https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3002 https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4002 https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-5001 •
CVSS: 5.7EPSS: 0%CPEs: 186EXPL: 0CVE-2023-20521
https://notcve.org/view.php?id=CVE-2023-20521
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 service. TOCTOU en el ASP Bootloader puede permitir que un atacante con acceso físico altere los registros ROM SPI después de la verificación del contenido de la memoria, lo que podría provocar una pérdida de confidencialidad o una denegación de servicio. • https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3002 https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4002 https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-5001 • CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition •
CVSS: 7.5EPSS: 0%CPEs: 274EXPL: 0CVE-2021-46774
https://notcve.org/view.php?id=CVE-2021-46774
Insufficient DRAM address validation in System Management Unit (SMU) may allow an attacker to read/write from/to an invalid DRAM address, potentially resulting in denial-of-service. Una validación de dirección DRAM insuficiente en System Management Unit (SMU) puede permitir que un atacante lea/escriba desde/hacia una dirección DRAM no válida, lo que podría provocar una denegación de servicio. • https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3002 https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4002 https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-5001 •
CVSS: 5.5EPSS: 0%CPEs: 256EXPL: 0CVE-2021-26371
https://notcve.org/view.php?id=CVE-2021-26371
A compromised or malicious ABL or UApp could send a SHA256 system call to the bootloader, which may result in exposure of ASP memory to userspace, potentially leading to information disclosure. • https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3001 https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001 •