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Resource Exhaustion Affecting kernel-bootwrapper package, versions <0:3.10.0-1062.26.1.el7

Severity

 Recommended
high

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.04% (6th percentile)

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  • Snyk ID SNYK-RHEL7-KERNELBOOTWRAPPER-4970025
  • published 26 Jul 2021
  • disclosed 17 Jan 2018
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Introduced: 17 Jan 2018

CVE-2018-7191 Open this link in a new tab
CWE-400 Open this link in a new tab
CWE-476 Open this link in a new tab

How to fix?

Upgrade RHEL:7 kernel-bootwrapper to version 0:3.10.0-1062.26.1.el7 or higher.
This issue was patched in RHSA-2020:2522.

NVD Description

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

In the tun subsystem in the Linux kernel before 4.13.14, dev_get_valid_name is not called before register_netdevice. This allows local users to cause a denial of service (NULL pointer dereference and panic) via an ioctl(TUNSETIFF) call with a dev name containing a / character. This is similar to CVE-2013-4343.

References