CVE-2021-46778

CWE-203CWE-200 — Information Exposure4 documents4 sources
Severity
5.6MEDIUM
EPSS
0.1%
top 69.07%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
AMD AMD Processors
Timeline
PublishedAug 10
Latest updateAug 11

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.

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:NExploitability: 1.1 | Impact: 4.0

Affected Packages1 packages

▶CVEListV5amd/amd_processorsProcessor Some AMD Processors

🔴Vulnerability Details

2
GHSA
GHSA-745h-3gvr-9mc6: Execution unit scheduler contention may lead to a side channel vulnerability found on AMD CPU microarchitectures codenamed “Zen 1”, “Zen 2” and “Zen 3↗2022-08-11
▶
CVEList
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↗2022-08-09
▶

📋Vendor Advisories

1
Red Hat
hw: cpu: AMD: Execution Unit Scheduler Contention Side-Channel vulnerability↗2022-08-09
▶