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AMD Client Vulnerabilities – January 2023

Bulletin ID: AMD-SB-1031
Potential Impact: Varies by CVE, see descriptions below
Severity: Varies by CVE, see descriptions below

Summary

In collaboration with various third parties, AMD platforms were audited for potential security exposures.  Potential vulnerabilities in AMD Secure Processor (ASP), AMD System Management Unit (SMU), and other platform components were discovered and are being mitigated in AGESA™ PI software packages associated with AMD Athlon™ Processors, Ryzen™ Processors and Threadripper™ Processors.

CVE Details

Refer to Glossary for explanation of terms

CVE

Severity

Description

CVE‑2021‑26316

High

Failure to validate the communication buffer and communication service in the BIOS may allow an attacker to tamper with the buffer resulting in potential SMM (System Management Mode) arbitrary code execution.

CVE‑2021‑26346

Medium

 Failure to validate the integer operand in ASP (AMD Secure Processor) bootloader may allow an attacker to introduce an integer overflow in the L2 directory table in SPI flash resulting in a potential denial of service.

CVE‑2021‑46795

Low

A TOCTOU (time-of-check to time-of-use) vulnerability exists where an attacker may use a compromised BIOS to cause the TEE OS to read memory out of bounds that could potentially result in a denial of service.

Mitigation

The AGESA™ versions listed below have been released to the Original Equipment Manufacturers (OEM) to mitigate these issues.  Please refer to your OEM for the BIOS update specific to your product. 

DESKTOP

CVE

AMD Ryzen™ 2000 series Desktop Processors
“Raven Ridge” AM4

AMD Ryzen™ 2000 Series Desktop Processors
“Pinnacle Ridge”

AMD Ryzen™ 3000 Series Desktop Processors
“Matisse” AM4

AMD Ryzen™ 5000 Series Desktop Processors
“Vermeer” AM4

AMD Ryzen™ 5000 Series Desktop Processor with Radeon™ Graphics
“Cezanne” AM4
Minimum version to mitigate all listed CVEs

Raven-FP5-AM4 1.1.0.D
ComboAM4PI 1.0.0.8
ComboAM4v2 PI 1.2.0.4
PinnaclePI-AM4 1.0.0.C

PinnaclePI-AM4 1.0.0.C
ComboAM4PI 1.0.0.8
ComboAM4v2 PI 1.2.0.4

 N/A N/A ComboAM4v2 PI 1.2.0.8
CVE‑2021‑26316

Raven-FP5-AM4 1.1.0.D
ComboAM4PI 1.0.0.8
ComboAM4v2 PI 1.2.0.4
PinnaclePI-AM4 1.0.0.C

PinnaclePI-AM4 1.0.0.C
ComboAM4PI 1.0.0.8
ComboAM4v2 PI 1.2.0.4

 N/A N/A ComboAM4v2 PI 1.2.0.4
CVE‑2021‑26346

N/A

N/A

 N/A N/A ComboAM4v2 PI 1.2.0.8
CVE‑2021‑46795

N/A

N/A

 N/A N/A ComboAM4v2 PI 1.2.0.5

HIGH END DESKTOP

CVE

2nd Gen AMD Ryzen™ Threadripper™ Processors
“Colfax”

3rd Gen AMD Ryzen™ Threadripper™ Processors
“Castle Peak” HEDT
Minimum version to mitigate all listed CVEs

SummitPI-SP3r2 1.1.0.5

CastlePeakPI-SP3r3 1.0.0.6
CVE‑2021‑26316

SummitPI-SP3r2 1.1.0.5

CastlePeakPI-SP3r3 1.0.0.6
CVE‑2021‑26346

N/A

N/A
CVE‑2021‑46795

N/A

N/A

WORKSTATION

CVE

AMD Ryzen™ Threadripper™ PRO Processors
“Castle Peak” WS

AMD Ryzen™ Threadripper™ PRO Processors
“Chagall” WS
Minimum version to mitigate all listed CVEs

CastlePeakWSPI-sWRX8 1.0.0.7
ChagallWSPI-sWRX8 0.0.9.0

N/A
CVE‑2021‑26316

CastlePeakWSPI-sWRX8 1.0.0.7
ChagallWSPI-sWRX8 0.0.9.0

N/A
CVE‑2021‑26346

N/A

N/A
CVE‑2021‑46795

N/A

N/A

MOBILE - AMD Athlon™ Series

CVE

AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics
“Dali”/”Dali” ULP

AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics 
“Pollock”
Minimum version to mitigate all listed CVEs

PicassoPI-FP5 1.0.0.D

PollockPI-FT5 1.0.0.3
CVE‑2021‑26316

PicassoPI-FP5 1.0.0.D

PollockPI-FT5 1.0.0.3
CVE‑2021‑26346

N/A

N/A
CVE‑2021‑46795

N/A

N/A

MOBILE - AMD Ryzen™ Series

CVE

AMD Ryzen™ 2000 Series Mobile Processors
“Raven Ridge” FP5

AMD Ryzen™ 3000 Series Mobile processor, 2nd Gen AMD Ryzen™ Mobile Processors with Radeon™ Graphics
“Picasso”

AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics
“Renoir” FP6

AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics
“Lucienne”

AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics
“Cezanne”

 AMD Ryzen™ 6000 Series Mobile Processors
"Rembrandt"
Minimum version to mitigate all listed CVEs

N/A

PicassoPI-FP5 1.0.0.D ComboAM4PI 1.0.0.8  ComboAM4v2 PI 1.2.0.4

 RenoirPI-FP6 1.0.0.9
ComboAM4v2 PI 1.2.0.8		 CezannePI-FP6 1.0.0.B CezannePI-FP6 1.0.0.B N/A
CVE‑2021‑26316

N/A

PicassoPI-FP5 1.0.0.D ComboAM4PI 1.0.0.8  ComboAM4v2 PI 1.2.0.4

 RenoirPI-FP6 1.0.0.7 ComboAM4v2 PI 1.2.0.4 CezannePI-FP6 1.0.0.6 CezannePI-FP6 1.0.0.6 N/A
CVE‑2021‑26346

N/A

N/A

 RenoirPI-FP6 1.0.0.9
ComboAM4v2 PI 1.2.0.8		 CezannePI-FP6 1.0.0.B CezannePI-FP6 1.0.0.B N/A
CVE‑2021‑46795

N/A

N/A

 RenoirPI-FP6 1.0.0.7 ComboAM4v2 PI 1.2.0.5 CezannePI-FP6 1.0.0.6 CezannePI-FP6 1.0.0.6 N/A


Acknowledgement

AMD thanks the following for reporting these issues and engaging in coordinated vulnerability disclosure

  • Jiawei Yin(@yngweijw): CVE-2021-26316
  • Mahdi Braik of the Apple Media Products RedTeam : CVE-2021-26391
  • Internal audit: CVE-2021-26346

 

Revisions

Revision Date   Description  
1/10/2023 Initial publication