Insufficient Input Validation in SYS_KEY_DERIVE System Call in AMD Products
CVE-2021-26398

7.8HIGH

Key Information:

Vendor

Amd
Status
1st Gen Epyc
2nd Gen Epyc
3rd Gen Epyc
Vendor
CVE Published:
11 January 2023

What is CVE-2021-26398?

The vulnerability involves insufficient input validation within the SYS_KEY_DERIVE system call in AMD Secure Processor systems. This flaw can be exploited by an attacker through a compromised user application or ABL, allowing them to corrupt the ASP (AMD Secure Processor) OS memory. Such exploitation may lead to arbitrary code execution, posing significant security risks to affected systems.

Affected Version(s)

1st Gen EPYC x86 various

2nd Gen EPYC x86 Various

3rd Gen EPYC x86 various

References

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

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.