CVE-2018-6559

LOW

Linux Kernel - Unauthorized File Name Exposure via overlayfs User Namespace Mount

Title source: llm
STIX 2.1

Description

The Linux kernel, as used in Ubuntu 18.04 LTS and Ubuntu 18.10, allows local users to obtain names of files in which they would not normally be able to access via an overlayfs mount inside of a user namespace.

References (9)

Core 9
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/105752
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3836-2/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3835-1/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3833-1/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3832-1/
Exploit, Issue Tracking, Third Party Advisory x_refsource_confirm
https://launchpad.net/bugs/1793458
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3836-1/

Scores

CVSS v3 3.3
EPSS 0.0008
EPSS Percentile 24.4%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Details

CWE
CWE-200
Status published
Products (4)
canonical/ubuntu_linux 16.04
canonical/ubuntu_linux 18.04
canonical/ubuntu_linux 18.10
linux/linux_kernel
Published Oct 26, 2018
Tracked Since Feb 18, 2026