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CVE-2018-1118

20
FAUCET Score

CVE-2018-1118 describes a memory initialization flaw in the Linux kernel's vhost module (versions 4.8 and later), allowing local privileged users to read kernel memory contents via the /dev/vhost-net device. This medium-severity vulnerability (CVSS 5.5) has a low attack complexity and requires local access, with the primary impact being confidentiality compromise. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.8, < 4.18CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
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:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:redhat:virtualization_host:4.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

2.3LOW

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
0.8
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.40%
Probability of exploitation in next 30 days
EPSS Percentile
33.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0040 is in the 88th percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt-0:3.10.0-957.rt56.910.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-alt-0:4.14.0-115.el7a
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-0:3.10.0-957.el7
View patch

Vendor Advisories (1)

redhatCVE-2018-1118Low

kernel: vhost: Information disclosure in vhost/vhost.c:vhost_new_msg()

Apr 23, 2018

References

access.redhat.com / errata/RHSA-2018:2948
Third Party Advisory
access.redhat.com / errata/RHSA-2018:3083
Third Party Advisory
access.redhat.com / errata/RHSA-2018:3096
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
lists.debian.org / debian-lts-announce/2018/07/msg00020.html
Mailing ListThird Party Advisory
usn.ubuntu.com / 3762-1
Third Party Advisory
usn.ubuntu.com / 3762-2
Third Party Advisory