CVE-2021-26379

State: Published
Severity: 9.8 Critical
Published: May 9, 2023
Updated: Jan 28, 2025
Reserved: Jan 29, 2021

Description

Insufficient input validation of mailbox data in the SMU may allow an attacker to coerce the SMU to corrupt SMRAM, potentially leading to a loss of integrity and privilege escalation.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	CISA-ADP

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
2nd Gen AMD EPYC™AMD	various Affected
3rd Gen AMD EPYC™AMD	various Affected

References

https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3001vendor-advisory

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