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Resource Exhaustion Affecting kernel-uek-devel package, versions <0:4.1.12-94.5.9.el7uek

Severity

 Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-ORACLE7-KERNELUEKDEVEL-2520074
  • published10 Apr 2022
  • disclosed28 Dec 2016
Report a new vulnerability Found a mistake?

Introduced: 28 Dec 2016

CVE-2016-6213  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade Oracle:7 kernel-uek-devel to version 0:4.1.12-94.5.9.el7uek or higher.
This issue was patched in ELSA-2017-3605.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek-devel package and not the kernel-uek-devel package as distributed by Oracle. See How to fix? for Oracle: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.