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Allocation of Resources Without Limits or Throttling Affecting kernel-rt-devel package, versions <0:3.10.0-693.rt56.617.el7

Severity

 Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-CENTOS7-KERNELRTDEVEL-2089349
  • published26 Jul 2021
  • disclosed13 Jul 2016
Report a new vulnerability Found a mistake?

Introduced: 13 Jul 2016

CVE-2016-6213  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

Upgrade Centos:7 kernel-rt-devel to version 0:3.10.0-693.rt56.617.el7 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-devel package and not the kernel-rt-devel package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

fs/namespace.c in the Linux kernel before 4.9 does not restrict how many mounts may exist in a mount namespace, which allows local users to cause a denial of service (memory consumption and deadlock) via MS_BIND mount system calls, as demonstrated by a loop that triggers exponential growth in the number of mounts.