#VU63691 Time-of-check Time-of-use (TOCTOU) Race Condition in 2nd Gen AMD EPYC Processors and 3rd Gen AMD EPYC Processors - CVE-2021-26350 

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Main Vulnerability Database Vulnerabilities #VU63691

#VU63691 Time-of-check Time-of-use (TOCTOU) Race Condition in 2nd Gen AMD EPYC Processors and 3rd Gen AMD EPYC Processors - CVE-2021-26350

Published: May 26, 2022


Vulnerability identifier: #VU63691
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-2021-26350
CWE-ID: CWE-367
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

Description

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

The vulnerability exists due to a race condition in the System Management Unit (SMU). A local user can obtain and manipulate the address of a message port register and perform a denial of service attack.

Remediation

Install updates from vendor's website.

External links