CVE-2018-6559

Name: CVE-2018-6559
Creator: NVD / NIST
Published: 2018-10-26T17:29:00.413+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.53%

Last modified Jun 17, 2026

CVE-2018-6559 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.53% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

0.53%

40.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	All versions
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	18.10

References

http://www.securityfocus.com/bid/105752Third Party Advisory, VDB Entry
https://launchpad.net/bugs/1793458Exploit, Issue Tracking, Third Party Advisory
https://lists.ubuntu.com/archives/kernel-team/2018-October/096172.htmlThird Party Advisory
https://people.canonical.com/~ubuntu-security/cve/2018/CVE-2018-6559.htmlThird Party Advisory
https://usn.ubuntu.com/3832-1/Third Party Advisory
https://usn.ubuntu.com/3833-1/Third Party Advisory
https://usn.ubuntu.com/3835-1/Third Party Advisory
https://usn.ubuntu.com/3836-1/Third Party Advisory
https://usn.ubuntu.com/3836-2/Third Party Advisory
http://www.securityfocus.com/bid/105752Third Party Advisory, VDB Entry
https://launchpad.net/bugs/1793458Exploit, Issue Tracking, Third Party Advisory
https://lists.ubuntu.com/archives/kernel-team/2018-October/096172.htmlThird Party Advisory
https://people.canonical.com/~ubuntu-security/cve/2018/CVE-2018-6559.htmlThird Party Advisory
https://usn.ubuntu.com/3832-1/Third Party Advisory
https://usn.ubuntu.com/3833-1/Third Party Advisory
https://usn.ubuntu.com/3835-1/Third Party Advisory
https://usn.ubuntu.com/3836-1/Third Party Advisory
https://usn.ubuntu.com/3836-2/Third Party Advisory

Timeline

Published: Oct 26, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-6559?

How severe is CVE-2018-6559?

Severity scoring for CVE-2018-6559 is pending analysis. The EPSS model estimates a 0.53% probability of exploitation in the next 30 days.

How do I fix CVE-2018-6559?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-6559?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST