CVE-2021-20239

low-risk

Published 2021-05-28

A flaw was found in the Linux kernel in versions before 5.4.92 in the BPF protocol. This flaw allows an attacker with a local account to leak information about kernel internal addresses. The highest threat from this vulnerability is to confidentiality.

Do I need to act?

0.09% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 3.3/10 Low

LOCAL / LOW complexity

Affected Products (5)

Linux Kernel

Enterprise Linux

Fedora

Affected Vendors

Redhat Linux Fedoraproject

References (2)

Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1923636

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low-risk

Severity 13/34 · Low

Exploitability 0/34 · Minimal

Exposure 12/34 · Low