What is CVE-2018-1108?

CVE-2018-1108 is a medium-severity vulnerability in Kernel Drivers, classified under Use of Insufficiently Random Values. CVSS score: 5.9/10. Published 2018-05-21.

How severe is CVE-2018-1108?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Is CVE-2018-1108 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Kernel Drivers

CVE-2018-1108

kernel drivers before version 4.17-rc1 are vulnerable to a weakness in the Linux kernel's implementation of random seed data. Programs, early in the boot sequence, could use the data allocated for the seed before it was sufficiently generated.

Published 2018-05-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.017 (76.7th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 76.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000

Affected products

Kernel Drivers — versions kernel 4.17-rc1
Linux Kernel
Canonical Ubuntu Linux — versions 16.04, 18.04
Debian Linux — versions 9.0

Weakness classification (CWE)

CWE-330 — Use of Insufficiently Random Values

Public proof-of-concept exploits

vincent-deng/veracode-container-security-finding-parser

References

usn.ubuntu.com/3752-2/ (vendor-advisory, Third Party Advisory)
usn.ubuntu.com/3752-3/ (vendor-advisory, Third Party Advisory)
usn.ubuntu.com/3718-2/ (vendor-advisory, Third Party Advisory)
www.securityfocus.com/bid/104055 (VDB Entry, Third Party Advisory, vdb-entry)
www.debian.org/security/2018/dsa-4188 (vendor-advisory, Third Party Advisory)
usn.ubuntu.com/3718-1/ (vendor-advisory, Third Party Advisory)
usn.ubuntu.com/3752-1/ (vendor-advisory, Third Party Advisory)
bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
lists.debian.org/debian-lts-announce/2022/07/msg00000.html (mailing-list, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2018-1108?: CVE-2018-1108 is a medium-severity vulnerability in Kernel Drivers, classified under Use of Insufficiently Random Values. CVSS score: 5.9/10. Published 2018-05-21.
How severe is CVE-2018-1108?: Medium severity. CVSS v3 base score is 5.9 out of 10.
Is CVE-2018-1108 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.