Use After Free Affecting kernel-rt-doc package, versions <0:3.10.0-957.27.2.rt56.940.el7


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.06% (31st percentile)

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  • Snyk IDSNYK-CENTOS7-KERNELRTDOC-2136275
  • published26 Jul 2021
  • disclosed27 Nov 2018

Introduced: 27 Nov 2018

CVE-2018-16884  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Centos:7 kernel-rt-doc to version 0:3.10.0-957.27.2.rt56.940.el7 or higher.

NVD Description

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

A flaw was found in the Linux kernel's NFS41+ subsystem. NFS41+ shares mounted in different network namespaces at the same time can make bc_svc_process() use wrong back-channel IDs and cause a use-after-free vulnerability. Thus a malicious container user can cause a host kernel memory corruption and a system panic. Due to the nature of the flaw, privilege escalation cannot be fully ruled out.

CVSS Scores

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