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CVE-2018-16880

7.0 · HIGH

A flaw was found in the Linux kernel's handle_rx() function in the [vhost_net] driver.

Published Jan 29, 2019CWE-787EPSS 0.56%

Overview

CVE-2018-16880 is a high-severity vulnerability. It was published on January 29, 2019 and has a CVSS 3.1 base score of 7.0 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.0, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

A flaw was found in the Linux kernel's handle_rx() function in the [vhost_net] driver. A malicious virtual guest, under specific conditions, can trigger an out-of-bounds write in a kmalloc-8 slab on a virtual host which may lead to a kernel memory corruption and a system panic. Due to the nature of the flaw, privilege escalation cannot be fully ruled out. Versions from v4.16 and newer are vulnerable.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Reflists.opensuse.org/opensuse-security-announce/2019-05/msg00037.htmlRefwww.securityfocus.com/bid/106735Refbugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16880Refsupport.f5.com/csp/article/K03593314Refusn.ubuntu.com/3903-1/Refusn.ubuntu.com/3903-2/Reflists.opensuse.org/opensuse-security-announce/2019-05/msg00037.htmlRefwww.securityfocus.com/bid/106735Refbugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16880Refsupport.f5.com/csp/article/K03593314

How CyberStrike helps

Frequently asked questions

What is CVE-2018-16880?

CVE-2018-16880 is a high-severity vulnerability. It was published on January 29, 2019 and has a CVSS 3.1 base score of 7.0 (HIGH).

How severe is CVE-2018-16880?

This vulnerability has a CVSS 3.1 base score of 7.0, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2018-16880?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2018-16880?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-16880 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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