CVE-2018-7191

MEDIUM

Linux Kernel < 4.13.14 - Denial of Service via TUNSETIFF ioctl with Invalid Device Name

Title source: llm
STIX 2.1

Description

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 (11)

Core 11
Core References
Exploit, Third Party Advisory x_refsource_misc
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1743792
Patch, Third Party Advisory x_refsource_misc
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1748846
Release Notes, Vendor Advisory x_refsource_misc
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.14
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/108380

Scores

CVSS v3 5.5
EPSS 0.0065
EPSS Percentile 46.6%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-476
Status published
Products (1)
linux/linux_kernel < 4.13.14
Published May 17, 2019
Tracked Since Feb 18, 2026