Execution unit scheduler contention may lead to a side... · CVE-2021-46778 · GitHub Advisory Database · GitHub

Execution unit scheduler contention may lead to a side...

High severity Unreviewed Published Aug 11, 2022 to the GitHub Advisory Database • Updated Jan 31, 2023

Package

No package listed— Suggest a package

Affected versions

Unknown

Patched versions

Unknown

Description

Execution unit scheduler contention may lead to a side channel vulnerability found on AMD CPU microarchitectures codenamed “Zen 1”, “Zen 2” and “Zen 3” that use simultaneous multithreading (SMT). By measuring the contention level on scheduler queues an attacker may potentially leak sensitive information.

References

Published by the National Vulnerability Database

Aug 10, 2022

Published to the GitHub Advisory Database Aug 11, 2022

Last updated Jan 31, 2023

Severity

High

7.5

/ 10

CVSS base metrics

Attack vector

Network

Attack complexity

Low

Privileges required

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N