What is CVE-2023-20531?

CVE-2023-20531 is a high-severity vulnerability in Amd 2nd Gen Epyc, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2023-01-11.

How severe is CVE-2023-20531?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Amd 2nd Gen Epyc

CVE-2023-20531

Insufficient bound checks in the SMU may allow an attacker to update the SRAM from/to address space to an invalid value potentially resulting in a denial of service.

Vulnerability class: Buffer Overflow

EPSS: 0.006 (44.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Amd 2nd Gen Epyc — versions various
Amd 3rd Gen Epyc — versions various
Amd Epyc_7002
Amd Epyc_7002_firmware
Amd Epyc_7003
Amd Epyc_7003_firmware
Amd Epyc_7232p
Amd Epyc_7232p_firmware
Amd Epyc_7252
Amd Epyc_7252_firmware

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

psirt@amd.com (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2023-20531?: CVE-2023-20531 is a high-severity vulnerability in Amd 2nd Gen Epyc, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2023-01-11.
How severe is CVE-2023-20531?: High severity. CVSS v3 base score is 7.5 out of 10.