CVE-2021-46774

Description

Insufficient DRAM address validation in System Management Unit (SMU) may allow an attacker to read/write from/to an invalid DRAM address, potentially resulting in denial-of-service.

6.7

CVSS

Severity: Medium

CVSS 3.1 •

EPSS 0.02%

Vendor Advisory amd.com Vendor Advisory amd.com Vendor Advisory amd.com

Affected: AMD Ryzen™ 3000 series Desktop Processors “Matisse"

Affected: AMD AMD Ryzen™ 5000 Series Desktop Processors “Vermeer”

Affected: AMD AMD Ryzen™ Threadripper™ 3000 Series Processors “Castle Peak” HEDT

Affected: AMD AMD Ryzen™ Threadripper™ PRO Processors “Castle Peak” WS SP3

Affected: AMD AMD Ryzen™ Threadripper™ PRO 3000WX Series Processors “Chagall” WS

Affected: AMD 1st Gen AMD EPYC™ Processors

Affected: AMD 2nd Gen AMD EPYC™ Processors

Affected: AMD 3rd Gen AMD EPYC™ Processors

Affected: AMD 4th Gen AMD EPYC™ Processors

Affected: AMD AMD EPYC™ Embedded 3000

Affected: AMD AMD EPYC™ Embedded 7002

Affected: AMD AMD EPYC™ Embedded 7003

Affected: AMD AMD Ryzen™ Embedded 5000

Affected: AMD AMD EPYC™ Embedded 7002

Affected: AMD AMD EPYC™ Embedded 3000

Affected: AMD AMD EPYC™ Embedded 7003

References

Link	Tags
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4002	vendor advisory
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3002	vendor advisory
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-5001	vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-46774?: CVE-2021-46774 has been scored as a medium severity vulnerability.
How to fix CVE-2021-46774?: To fix CVE-2021-46774, 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-2021-46774 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-46774 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-2021-46774?: CVE-2021-46774 affects AMD Ryzen™ 3000 series Desktop Processors “Matisse", AMD AMD Ryzen™ 5000 Series Desktop Processors “Vermeer”, AMD AMD Ryzen™ Threadripper™ 3000 Series Processors “Castle Peak” HEDT, AMD AMD Ryzen™ Threadripper™ PRO Processors “Castle Peak” WS SP3, AMD AMD Ryzen™ Threadripper™ PRO 3000WX Series Processors “Chagall” WS, AMD 1st Gen AMD EPYC™ Processors, AMD 2nd Gen AMD EPYC™ Processors, AMD 3rd Gen AMD EPYC™ Processors, AMD 4th Gen AMD EPYC™ Processors, AMD AMD EPYC™ Embedded 3000, AMD AMD EPYC™ Embedded 7002, AMD AMD EPYC™ Embedded 7003, AMD AMD Ryzen™ Embedded 5000, AMD AMD EPYC™ Embedded 7002, AMD AMD EPYC™ Embedded 3000, AMD AMD EPYC™ Embedded 7003.