CVE-2018-1118 Information disclosure in vhost

What is CVE-2018-1118?

CVE-2018-1118 is a low-severity vulnerability in Canonical Ubuntu Linux, published on 10 May 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-200, CWE-665

Which versions are affected by CVE-2018-1118?

It affects 7 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Linux kernel, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Workstation and 1 more.

How do I fix CVE-2018-1118?

Apply the vendor's patch.

Is CVE-2018-1118 being exploited?

There is no known exploitation of CVE-2018-1118 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2018-1118, GHSA-h6c2-frm7-53hm, UBUNTU-CVE-2018-1118.