Insufficient Bounds Checking in AMD Secure Processor
CVE-2021-46794

7.5HIGH

Key Information:

Vendor

Amd
Status
Ryzen™ 2000 Series Desktop Processors “raven Ridge” Am4
Ryzen™ 3000 Series Desktop Processors “matisse” Am4
Amd Ryzen™ 5000 Series Desktop Processors “vermeer” Am4
Ryzen™ 5000 Series Desktop Processor With Radeon™ Graphics “cezanne” Am4
Vendor
CVE Published:
9 May 2023

What is CVE-2021-46794?

Insufficient bounds checking in the AMD Secure Processor may lead to an out of bounds read during the checksum calculation for the System Management Interface mailbox. This flaw can trigger a data abort, potentially resulting in service disruptions and an inability to access critical system functionality. Organizations utilizing affected AMD products should assess their systems and apply any available mitigations to safeguard against this vulnerability.

Affected Version(s)

3rd Gen AMD Ryzen™ Threadripper™ Processors “Castle Peak” HEDT x86 various

AMD Ryzen™ 5000 Series Desktop Processors “Vermeer” AM4 x86 various

Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics “Pollock” x86 various

References

https://www.amd.com/en/corporate/product-security/bulleti...
vendor-advisory

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2021-46794 : Insufficient Bounds Checking in AMD Secure Processor