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CVE-2021-26338

Quick assessment

Affected
AMD 2nd Gen AMD EPYC™
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.

Advanced Micro Devices AMD System Management Unit（SMU）是美国超威半导体（Advanced Micro Devices）公司的一个系统管理单元。 AMD System Management Unit 存在安全漏洞，目前尚无此漏洞的相关信息，请随时关注CNNVD或厂商公告。

AI Predicted 6.5 Difficulty: Moderate EPSS 0.93% · P59

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2021-26338

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Improper access controls in System Management Unit (SMU) may allow for an attacker to override performance control tables located in DRAM resulting in a potential lack of system resources.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
AMD System Management Unit 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Advanced Micro Devices AMD System Management Unit（SMU）是美国超威半导体（Advanced Micro Devices）公司的一个系统管理单元。 AMD System Management Unit 存在安全漏洞，目前尚无此漏洞的相关信息，请随时关注CNNVD或厂商公告。
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 2nd Gen AMD EPYC™ unspecified ~ RomePI-SP3_1.0.0.C -
AMD 3rd Gen AMD EPYC™ unspecified ~ MilanPI-SP3_1.0.0.4 -

II. Public POCs for CVE-2021-26338

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III. Intelligence Information for CVE-2021-26338

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Other References for CVE-2021-26338 (1)

Same Patch Batch · AMD · 2021-11-16 · 21 CVEs total

CVE-2021-26331 AMD多款产品输入验证错误漏洞
CVE-2021-26337 AMD System Management Unit 输入验证错误漏洞
CVE-2021-26325 AMD 多款产品输入验证错误漏洞
CVE-2021-26330 AMD 多款产品缓冲区错误漏洞
CVE-2021-26327 Advanced Micro Devices SNP 输入验证错误漏洞
CVE-2020-12944 AMD Secure Processor输入验证错误漏洞
CVE-2021-26323 Advanced Micro Devices SNP 输入验证错误漏洞
CVE-2020-12961 AMD Platform Security Processor输入验证错误漏洞
CVE-2021-26315 AMD Platform Security Processor 数据伪造问题漏洞
CVE-2020-12954 AMD Platform Security Processor 安全漏洞
CVE-2021-26326 AMD 多款产品安全漏洞
CVE-2021-26335 AMD Secure Processor 输入验证错误漏洞
CVE-2021-26321 AMD Platform Security Processor命令注入漏洞
CVE-2020-12951 AMD Platform Security Processor 竞争条件问题漏洞
CVE-2021-26320 AMD Platform Security Processor信任管理问题漏洞
CVE-2021-26336 AMD System Management Unit 缓冲区错误漏洞
CVE-2020-12946 AMD Platform Security Processor 输入验证错误漏洞
CVE-2021-26322 AMD Secure Processor 安全特征问题漏洞
CVE-2021-26329 AMD 多款产品输入验证错误漏洞
CVE-2021-26312 AMD Platform Security Processor安全漏洞

IV. Related Vulnerabilities

Same product: 2nd Gen AMD EPYC™
Same vendor: AMD
Same weakness: CWE-284

V. Comments for CVE-2021-26338

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