Insufficient Input Validation in SMU of AMD Processors
CVE-2021-46762

3.9LOW

Key Information:

Vendor

Amd
Status
2nd Gen Amd Epyc™
3rd Gen Amd Epyc™
Amd Epyc™ Embedded 7002
Amd Epyc™ Embedded 7003
Vendor
CVE Published:
9 May 2023

What is CVE-2021-46762?

The vulnerability arises from inadequate input validation within the System Management Unit (SMU) of AMD processors. This flaw allows for the possibility of an attacker manipulating the SRAM of the SMU, which can lead to potential issues such as corruption of system memory, loss of data integrity, or even triggering denial of service scenarios. It is crucial for users of affected AMD processors to be aware of this vulnerability and implement recommendations from vendor advisories to mitigate associated risks.

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Affected Version(s)

2nd Gen AMD EPYC™ x86 various

3rd Gen AMD EPYC™ x86 various

AMD EPYC™ Embedded 7002 various

References

https://www.amd.com/en/corporate/product-security/bulleti...
vendor-advisory
https://www.amd.com/en/corporate/product-security/bulleti...
vendor-advisory

CVSS V3.1

Score:
3.9
Severity:
LOW
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
High
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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