AUGUST 4, 2026
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Case File

CVE-2021-4002

MEDIUM · CVSS 4.4 EPSS 0.52%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2022-03-03 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 4.4. It affects Linux.

CVE
CVE-2021-4002
Severity
MEDIUM
CVSS
4.4
EPSS
0.52%
Linux

Original NVD Description

A memory leak flaw in the Linux kernel's hugetlbfs memory usage was found in the way the user maps some regions of memory twice using shmget() which are aligned to PUD alignment with the fault of some of the memory pages. A local user could use this flaw to get unauthorized access to some data.

Related CVEs

Other vulnerabilities affecting the same vendor(s)