CVE-2021-46778: 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…

PriorityP423medium5.6CVSS 3.1

AVLACHPRLUINSCCHINAN

EPSS

0.22%

12.1th percentile

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.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
amd	amd_processors	—	—

CVSS provenance

nvdv3.15.6MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

vendor_redhat5.6MEDIUM

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