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Resource Exhaustion Affecting bpftool package, versions <0:3.10.0-1127.el7

Severity

 Recommended
0.0
medium
0
10

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.04% (6th percentile)

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  • Snyk ID SNYK-CENTOS7-BPFTOOL-2154663
  • 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 Centos:7 bpftool to version 0:3.10.0-1127.el7 or higher.

NVD Description

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