Race Condition Affecting kernel-debug 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-KERNELDEBUG-4656059
  • published 26 Jul 2021
  • disclosed 11 Jul 2016

How to fix?

Upgrade RHEL:7 kernel-debug 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-debug package and not the kernel-debug package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

The filesystem layer in the Linux kernel before 4.5.5 proceeds with post-rename operations after an OverlayFS file is renamed to a self-hardlink, which allows local users to cause a denial of service (system crash) via a rename system call, related to fs/namei.c and fs/open.c.