Side-channels Related to the x86 PREFETCH Instruction
CVE-2021-26318

4.7MEDIUM

Key Information:

Vendor

Amd
Status
All Supported Processors
Vendor
CVE Published:
13 October 2021

What is CVE-2021-26318?

A timing and power-based side channel attack leveraging the x86 PREFETCH instructions on some AMD CPUs could potentially result in leaked kernel address space information.

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Deploy the Patch

Affected Version(s)

All supported processors < unspecified

References

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

CVSS V3.1

Score:
4.7
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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