NULL Pointer Dereference Affecting torvalds/linux package, versions [,4.13.14)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.09% (27th percentile)

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  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-3005989
  • published26 Jan 2022
  • disclosed17 May 2019
  • creditUnknown

Introduced: 17 May 2019

CVE-2018-7191  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade torvalds/linux to version 4.13.14 or higher.

Overview

Affected versions of this package are vulnerable to NULL Pointer Dereference. 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.

CVSS Base Scores

version 3.1