Home/CVE/Insufficient input validation in SYS_KEY_DERIVE system call in a compromised user application or ABL may allow an attack
CVE

CVE-2021-26398

Insufficient input validation in SYS_KEY_DERIVE system call in a compromised user application or ABL may allow an attack

Insufficient input validation in SYS_KEY_DERIVE system call in a compromised user application or ABL may allow an attacker to corrupt ASP (AMD Secure Processor) OS memory which may lead to potential arbitrary code execution.

HIGH · CVSS 7.8 EPSS 0.00063
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-787Out-of-bounds Write
CWE-787Out-of-bounds Write
▤

Affected Products & Versions

60
amd epyc 7h12 firmware< romepi_1.0.0.c
amd epyc 7f72 firmware< romepi_1.0.0.c
amd epyc 7f52 firmware< romepi_1.0.0.c
amd epyc 7f32 firmware< romepi_1.0.0.c
amd epyc 7742 firmware< romepi_1.0.0.c
amd epyc 7702p firmware< romepi_1.0.0.c
amd epyc 7702 firmware< romepi_1.0.0.c
amd epyc 7662 firmware< romepi_1.0.0.c
▣

Scoring & Timeline

7.8
HIGH · CVSS v3.1 · psirt@amd.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD11 Jan 2023 · 08:15 AM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032Vendor Advisory
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