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

Severity

 Recommended
high

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.04% (12th percentile)

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  • Snyk ID SNYK-RHEL7-KERNEL-4633563
  • published 26 Jul 2021
  • disclosed 11 Jul 2016
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Introduced: 11 Jul 2016

CVE-2016-6197 Open this link in a new tab
CWE-362 Open this link in a new tab

How to fix?

Upgrade RHEL:7 kernel to version 0:3.10.0-327.36.1.el7 or higher.
This issue was patched in RHSA-2016:1847.

NVD Description

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