CVE-2021-26402

Name of the Vulnerable Software and Affected Versions AMD BIOS software (affected versions not specified)

Description The issue is related to insufficient bounds checking in the AMD Secure Processor firmware when handling BIOS mailbox commands. This can allow an attacker to write partially-controlled data out-of-bounds to SMM or SEV-ES regions, potentially leading to a loss of integrity and availability of protected information.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.