CVE-2021-26376
Quick assessment
Affected
AMD EPYC™ Processors
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
AMD System Management Unit（SMU）是美国AMD公司的一个系统管理单元。 AMD System Management Unit 存在安全漏洞，该漏洞源于System Management Unit (SMU) FeatureConfig中检查不足，从而导致拒绝资源或拒绝服务。
Possible ATT&CK Techniques 1 AI
T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2021-26376
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Insufficient checks in System Management Unit (SMU) FeatureConfig may result in reenabling features potentially resulting in denial of resources and/or denial of service.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
AMD System Management Unit 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
AMD System Management Unit（SMU）是美国AMD公司的一个系统管理单元。 AMD System Management Unit 存在安全漏洞，该漏洞源于System Management Unit (SMU) FeatureConfig中检查不足，从而导致拒绝资源或拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| AMD | EPYC™ Processors | various | - |
|
| AMD | Ryzen™ Series | various | - |
|
| AMD | Athlon™ Series | various | - |
|
II. Public POCs for CVE-2021-26376
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2021-26376 (2)
Same Patch Batch · AMD · 2022-05-11 · 15 CVEs total
| CVE-2021-46744 | AMD CPUs 加密问题漏洞 | |
| CVE-2021-26400 | AMD processors 安全漏洞 | |
| CVE-2021-26388 | AMD BIOS 缓冲区错误漏洞 | |
| CVE-2021-26373 | AMD System Management Unit 输入验证错误漏洞 | |
| CVE-2021-26348 | AMD Processors 安全漏洞 | |
| CVE-2021-26364 | AMD CPUs缓冲区错误漏洞 | |
| CVE-2021-26349 | AMD Processors 安全漏洞 | |
| CVE-2021-26378 | AMD System Management Unit 缓冲区错误漏洞 | |
| CVE-2021-26347 | AMD System Management Unit 安全漏洞 | |
| CVE-2021-26342 | AMD CPUs 安全漏洞 | |
| CVE-2021-26375 | AMD System Management Unit 缓冲区错误漏洞 | |
| CVE-2021-26372 | AMD System Management Unit 缓冲区错误漏洞 | |
| CVE-2021-26339 | AMD CPUs 安全漏洞 | |
| CVE-2021-26350 | AMD System Management Unit 安全漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2021-26376
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