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Race Condition Affecting kernel package, versions <0:3.10.0-327.36.1.el7

Severity

 Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-CENTOS7-KERNEL-2068324
  • published26 Jul 2021
  • disclosed11 Jul 2016
Report a new vulnerability Found a mistake?

Introduced: 11 Jul 2016

CVE-2016-6197  (opens in a new tab)
CWE-362  (opens in a new tab)

How to fix?

Upgrade Centos:7 kernel to version 0:3.10.0-327.36.1.el7 or higher.

NVD Description

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

fs/overlayfs/dir.c in the OverlayFS filesystem implementation in the Linux kernel before 4.6 does not properly verify the upper dentry before proceeding with unlink and rename system-call processing, which allows local users to cause a denial of service (system crash) via a rename system call that specifies a self-hardlink.

References