Improper Zeroization of Hardware Register Affecting perf package, versions <0:4.18.0-305.114.1.el8_4


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

Exploit Maturity
Proof of Concept
EPSS
5.07% (93rd percentile)

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  • Snyk IDSNYK-RHEL8-PERF-6092869
  • published29 Nov 2023
  • disclosed25 Jul 2023

Introduced: 25 Jul 2023

CVE-2023-20593  (opens in a new tab)
CWE-1239  (opens in a new tab)

How to fix?

Upgrade RHEL:8 perf to version 0:4.18.0-305.114.1.el8_4 or higher.
This issue was patched in RHSA-2023:7557.

NVD Description

Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

An issue in “Zen 2” CPUs, under specific microarchitectural circumstances, may allow an attacker to potentially access sensitive information.

References

CVSS Base Scores

version 3.1