CVE-2018-6559

low-risk

Published 2018-10-26

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.

Do I need to act?

0.08% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 3.3/10 Low

LOCAL / LOW complexity

Affected Products (4)

Linux Kernel

Ubuntu Linux

Affected Vendors

Linux Canonical

References (18)

Third Party Advisory http://www.securityfocus.com/bid/105752

Exploit https://launchpad.net/bugs/1793458

Third Party Advisory https://lists.ubuntu.com/archives/kernel-team/2018-October/096172.html

Third Party Advisory https://people.canonical.com/~ubuntu-security/cve/2018/CVE-2018-6559.html

Third 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/