SPI Lock Bypass 

Bulletin ID: AMD-SB-1041
Potential Impact: System Integrity
Severity: High

Summary

Potential weaknesses in AMD’s SPI protection features may allow an attacker to bypass the native System Management Mode (SMM) ROM protections.

CVE Details

CVE-2022-23829

A potential weakness in AMD SPI protection features may allow a malicious attacker with Ring0 (kernel mode) access to bypass the native System Management Mode (SMM) ROM protections.

Affected Products

Client

AMD Ryzen™ Threadripper™ PRO Processors 5900 WX-Series

AMD Ryzen™ 6000 Series Mobile Processors and Workstations

AMD Ryzen™ 7000 Series Desktop Processors

AMD Ryzen™ 5000 Series Mobile Processors

AMD Ryzen™ 5000 Series Desktop Processors

AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics

AMD Ryzen™ 3000 Series Desktop Processors

AMD Ryzen™ 4000 Series Desktop Processors with Radeon™ Graphics

AMD Ryzen™ 4000 Series Mobile Processors

AMD Ryzen™ 3000 Series Mobile Processor / 2nd Gen AMD Ryzen™ Mobile Processor with Radeon™ Graphics 

AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics  

AMD Ryzen™ Threadripper™ PRO Processor

Server

1st Gen AMD EPYC™ Processors

2nd Gen AMD EPYC™ Processors

3rd Gen AMD EPYC™ Processors

Embedded Processors

AMD EPYC™ Embedded 3000 

AMD EPYCTM Embedded 7002 

AMD EPYC™ Embedded 7003 

AMD RyzenTM Embedded R1000 

AMD RyzenTM Embedded R2000 

AMD RyzenTM Embedded 5000 

AMD RyzenTM Embedded V1000 

AMD RyzenTM Embedded V2000 

AMD RyzenTM Embedded V3000

Mitigation

Platform BIOS changes released to AMD customers are needed to mitigate this issue.

Contact your OEM supplier for the BIOS update specific to your system.

Acknowledgement

CVE-2022-23829: Reported by Oracle and discovered by internal Oracle security researcher Hugo Magalhaes and by Volodymyr Pikhur.

Revisions

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