CVE-2021-46756

CRITICAL

ASP Bootloader - DoS

Title source: llm

Description

Insufficient validation of inputs in SVC_MAP_USER_STACK in the ASP (AMD Secure Processor) bootloader may allow an attacker with a malicious Uapp or ABL to send malformed or invalid syscall to the bootloader resulting in a potential denial of service and loss of integrity.

References (2)

Scores

CVSS v3 9.1
EPSS 0.0015
EPSS Percentile 35.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Classification

CWE
CWE-20
Status published

Affected Products (50)

amd/epyc_72f3_firmware
amd/epyc_7313_firmware
amd/epyc_7313p_firmware
amd/epyc_7343_firmware
amd/epyc_7373x_firmware
amd/epyc_73f3_firmware
amd/epyc_7413_firmware
amd/epyc_7443_firmware
amd/epyc_7443p_firmware
amd/epyc_7453_firmware
amd/epyc_7473x_firmware
amd/epyc_74f3_firmware
amd/epyc_7513_firmware
amd/epyc_7543_firmware
amd/epyc_7543p_firmware
... and 35 more

Timeline

Published May 09, 2023
Tracked Since Feb 18, 2026