CVE-2021-20239
LOW EPSS 16.8%
Published May 28, 20215y ago · Modified Jun 17, 20262w ago
3.3 CVSS 3.1
Published May 28, 2021 5y ago
Last Modified Jun 17, 2026 2w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity None
Availability None
Threat Intelligence
EPSS Exploit Probability
16.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 2
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer Memory Safety
CWE-822
Affected Products 5
| Vendor | Product | Version | Range |
|---|---|---|---|
| linux | linux_kernel | * | <5.4.92 |
| redhat | enterprise_linux | 5.0 | any |
| redhat | enterprise_linux | 6.0 | any |
| redhat | enterprise_linux | 8.0 | any |
| fedoraproject | fedora | 33 | any |
References 1
- bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=1923636
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.