Buffer overflow in Amd 1st Gen Epyc
CVE-2021-26398
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.
Vulnerability class: Buffer Overflow
EPSS: 0.002 (11.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Amd 1st Gen Epyc — versions various
- Amd 2nd Gen Epyc — versions Various
- Amd 3rd Gen Epyc — versions various
- Amd Epyc_7001
- Amd Epyc_7001_firmware
- Amd Epyc_7002
- Amd Epyc_7002_firmware
- Amd Epyc_7003
- Amd Epyc_7003_firmware
- Amd Epyc_7232p
Weakness classification (CWE)
References
- psirt@amd.com (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-26398?
- CVE-2021-26398 is a high-severity vulnerability in Amd 1st Gen Epyc, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2023-01-11.
- How severe is CVE-2021-26398?
- High severity. CVSS v3 base score is 7.8 out of 10.