Data Leakage Vulnerability in AMD CPUs Due to Non-Canonical Address Execution
CVE-2020-12965

7.5HIGH

Key Information:

Vendor
Amd
Status
All Supported Processors
Vendor
CVE Published:
4 February 2022

Summary

Certain AMD CPUs may transiently execute non-canonical loads and store operations using only the lower 48 bits of the address space, which can potentially lead to the unintended exposure of sensitive data. This behavior occurs when specific software execution sequences are combined, allowing for the possibility of sensitive information leakage.

Affected Version(s)

All supported processors < unspecified

References

https://www.amd.com/en/corporate/product-security/bulleti...
http://www.openwall.com/lists/oss-security/2023/12/05/3
mailing-list

CVSS V3.1

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

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.