#VU63689 Buffer overflow in 2nd Gen AMD EPYC Processors and 3rd Gen AMD EPYC Processors - CVE-2021-26364
Published: May 26, 2022
Vulnerability identifier: #VU63689
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-2021-26364
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
2nd Gen AMD EPYC Processors
3rd Gen AMD EPYC Processors
Software vendor:
AMD
AMD
Description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in an SMU mailbox register. A local user can force SMU to read outside of the SRAM address range and perform a denial of service attack.
Remediation
Install updates from vendor's website.