CVE-2021-20239
LOW
3.3
CVSS Score
Published: May 28, 2021 at 10:42 AM UTC
Updated: June 17, 2026 at 03:33 AM UTC
4 products affected across 3 vendorsLinux KernelFedoraEnterprise Linux
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Severity
LOW3.3
Exploit prediction
EPSS 0.3%
Description
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
95%
v < 5.4.92
Affected range stops below 5.4.92, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
References (1)
x_refsource_MISCIssue TrackingThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1923636CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- LOW
- Integrity
- NONE
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-822CWE-119
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