Memory Leak Affecting kernel-tools package, versions <0:4.18.0-372.9.1.el8


Severity

Recommended
high

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-ROCKY8-KERNELTOOLS-3193176
  • published5 Jan 2023
  • disclosed3 Mar 2022

Introduced: 3 Mar 2022

CVE-2021-4002  (opens in a new tab)
CWE-401  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 kernel-tools to version 0:4.18.0-372.9.1.el8 or higher.
This issue was patched in RLSA-2022:1988.

NVD Description

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

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.

CVSS Scores

version 3.1