CVE-2018-1118

Name: CVE-2018-1118
Creator: NVD / NIST
Published: 2018-05-10T22:29:00.26+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 2.3/10EPSS 0.40%

Last modified Jun 17, 2026

CVE-2018-1118 is a low-severity vulnerability rated 2.3/10 on the CVSS scale. Linux kernel vhost since version 4.8 does not properly initialize memory in messages passed between virtual guests and the host operating system in the vhost/vhost.c:vhost_new_msg() function. This can allow local privileged users to read some kernel memory contents when reading from the /dev/vhost-net device file.. EPSS estimates a 0.40% chance of exploitation in the next 30 days.

Description

Linux kernel vhost since version 4.8 does not properly initialize memory in messages passed between virtual guests and the host operating system in the vhost/vhost.c:vhost_new_msg() function. This can allow local privileged users to read some kernel memory contents when reading from the /dev/vhost-net device file.

Metrics

CVSS 3.0

2.3/10

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

EPSS Probability

0.40%

32.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	>= 4.8, < 4.18
Debian	Debian Linux	8.0
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Redhat	Virtualization Host	4.0
Redhat	Enterprise Linux Desktop	7.0
Redhat	Enterprise Linux Server	7.0
Redhat	Enterprise Linux Workstation	7.0

References

https://access.redhat.com/errata/RHSA-2018:2948Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3083Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3096Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1118Issue Tracking, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00020.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/3762-1/Third Party Advisory
https://usn.ubuntu.com/3762-2/Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2948Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3083Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3096Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1118Issue Tracking, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00020.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/3762-1/Third Party Advisory
https://usn.ubuntu.com/3762-2/Third Party Advisory

Timeline

Published: May 10, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-1118?

How severe is CVE-2018-1118?

CVE-2018-1118 has a CVSS score of 2.3/10 (LOW severity). The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.

How do I fix CVE-2018-1118?

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.

How Strix Helps

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Source: NVD / NIST