Denial of Service Vulnerability in SEV Firmware by AMD
CVE-2021-26321

5.5MEDIUM

Key Information:

Vendor

Amd
Status
1st Gen Amd Epyc™
2nd Gen Amd Epyc™
3rd Gen Amd Epyc™
Vendor
CVE Published:
16 November 2021

What is CVE-2021-26321?

A vulnerability exists in the SEV Firmware due to insufficient validation of ID commands, which can potentially allow a local authenticated attacker to execute a denial of service against the Platform Security Processor (PSP). This flaw poses risks to system availability and could affect the overall integrity of the platform.

Affected Version(s)

1st Gen AMD EPYC™ < unspecified

2nd Gen AMD EPYC™ < unspecified

3rd Gen AMD EPYC™ < unspecified

References

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

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.