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7.1 High

CVE-2021-26402 Insufficient bounds checking in ASP (AMD Secure Processor) firmware while handling BIOS mailbox commands, may allow an…

Description

Insufficient bounds checking in ASP (AMD Secure Processor) firmware while handling BIOS mailbox commands, may allow an attacker to write partially-controlled data out-of-bounds to SMM or SEV-ES regions which may lead to a potential loss of integrity and availability.

Affected products and versions

Product Affected versions Fixed in
2nd Gen EPYC Versions not published
3rd Gen EPYC Versions not published

Other CVEs of 2nd Gen EPYC

The 4 CVEs of 2nd Gen EPYC →
CVE-2021-26398 Insufficient input validation in SYS_KEY_DERIVE system call in a compromised user application or ABL may allow an… 7.8 High CVE-2021-26316 Failure to validate the communication buffer and communication service in the BIOS may allow an attacker to tamper… 7.8 High CVE-2021-39298 A potential vulnerability in AMD System Management Mode (SMM) interrupt handler may allow an attacker with high… 6.5 Medium
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