CVE-2021-46753

Description

Failure to validate the length fields of the ASP (AMD Secure Processor) sensor fusion hub headers may allow an attacker with a malicious Uapp or ABL to map the ASP sensor fusion hub region and overwrite data structures leading to a potential loss of confidentiality and integrity.

9.1

CVSS

Severity: Critical

CVSS 3.1 •

EPSS 0.18%

Vendor Advisory amd.com

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

Affected: AMD Ryzen™ 5000 Series Desktop processor with Radeon™ Graphics “Cezanne” AM4

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

Affected: AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics “Pollock”

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

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

Affected: AMD Ryzen™ 3000 Series Mobile Processors with Radeon™ Graphics “Renoir”

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

Affected: AMD Ryzen™ 5000 Series Mobile processors with Radeon™ Graphics “Cezanne”

Affected: AMD Ryzen™ 6000 Series Mobile Processors "Rembrandt"

References

Link	Tags
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001	vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-46753?: CVE-2021-46753 has been scored as a critical severity vulnerability.
How to fix CVE-2021-46753?: To fix CVE-2021-46753, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-46753 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-46753 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-46753?: CVE-2021-46753 affects AMD Ryzen™ 2000 series Desktop Processors “Raven Ridge” AM4, AMD Ryzen™ 5000 Series Desktop processor with Radeon™ Graphics “Cezanne” AM4, AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics “Dali”/”Dali” ULP, AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics “Pollock”, 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™ 3000 Series Mobile Processors with Radeon™ Graphics “Renoir” , 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".