#VU63682 Buffer overflow in 2nd Gen AMD EPYC Processors and 3rd Gen AMD EPYC Processors - CVE-2021-26378

Vulnerability identifier: #VU63682

Vulnerability risk: Low

CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2021-26378

CWE-ID: CWE-119

Exploitation vector: Local access

Exploit availability: No public exploit available

Vulnerable software:
2nd Gen AMD EPYC Processors
3rd Gen AMD EPYC Processors

Software vendor:
AMD

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in System Management Unit (SMU). A local user can trigger memory corruption and perform a denial of service (DoS) attack.

Install updates from vendor's website.

• https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1028