Allocation of Resources Without Limits or Throttling Affecting kernel-rt-debug package, versions <0:4.18.0-372.9.1.rt7.166.el8


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-CENTOS8-KERNELRTDEBUG-1971123
  • published1 Sept 2021
  • disclosed15 Jul 2021

Introduced: 15 Jul 2021

CVE-2021-3759  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

Upgrade Centos:8 kernel-rt-debug to version 0:4.18.0-372.9.1.rt7.166.el8 or higher.

NVD Description

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

A memory overflow vulnerability was found in the Linux kernel’s ipc functionality of the memcg subsystem, in the way a user calls the semget function multiple times, creating semaphores. This flaw allows a local user to starve the resources, causing a denial of service. The highest threat from this vulnerability is to system availability.

CVSS Scores

version 3.1