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Memory Leak Affecting kernel-debug-modules-extra package, versions <0:4.18.0-372.9.1.el8

Severity

 Recommended
high

Based on Rocky Linux security rating

    Threat Intelligence

    EPSS
    0.04% (11th percentile)

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  • Snyk ID SNYK-ROCKY8-KERNELDEBUGMODULESEXTRA-3193141
  • published 5 Jan 2023
  • disclosed 3 Mar 2022
Report a new vulnerability Found a mistake?

Introduced: 3 Mar 2022

CVE-2021-4002 Open this link in a new tab
CWE-401 Open this link in a new tab

How to fix?

Upgrade Rocky-Linux:8 kernel-debug-modules-extra 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-debug-modules-extra package and not the kernel-debug-modules-extra 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
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NVD

4.4 medium
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    Low
  • Integrity (I)
    Low
  • Availability (A)
    None
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SUSE

5.1 medium
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Red Hat

5.1 medium