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CVE-2018-1108

22
FAUCET Score

CVE-2018-1108 describes a weakness in the Linux kernel's random seed generation, affecting kernel drivers before version 4.17-rc1 across various Debian and Ubuntu distributions. This vulnerability allows programs to access insufficiently generated random seed data early in the boot sequence. Rated as Medium severity (CVSS 5.9), it has a network attack vector and high attack complexity, potentially leading to high integrity impacts without affecting confidentiality or availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.16CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
18.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.9MEDIUM

CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
1.4
Impact Score
4.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.80%
Probability of exploitation in next 30 days
EPSS Percentile
76.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0180 is in the 56th percentile among its peer group of 19,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (4)

redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-alt
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: realtime-kernel

Vendor Advisories (1)

redhatCVE-2018-1108Low

kernel: drivers: getrandom(2) unblocks too early after system boot

Apr 12, 2018

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
lists.debian.org / debian-lts-announce/2022/07/msg00000.html
Mailing ListThird Party Advisory
usn.ubuntu.com / 3718-1
Third Party Advisory
usn.ubuntu.com / 3718-2
Third Party Advisory
usn.ubuntu.com / 3752-1
Third Party Advisory
usn.ubuntu.com / 3752-2
Third Party Advisory
usn.ubuntu.com / 3752-3
Third Party Advisory
debian.org / security/2018/dsa-4188
Third Party Advisory
securityfocus.com / bid/104055
Third Party AdvisoryVDB Entry