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CVE-2019-3900

7.7 · HIGH

An infinite loop issue was found in the vhost_net kernel module in Linux Kernel up to and including v5.1-rc6, while handling incoming packets in handle_rx().

Published Apr 25, 2019CWE-835EPSS 4.35%

Overview

CVE-2019-3900 is a high-severity vulnerability. It was published on April 25, 2019 and has a CVSS 3.1 base score of 7.7 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.7, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

An infinite loop issue was found in the vhost_net kernel module in Linux Kernel up to and including v5.1-rc6, while handling incoming packets in handle_rx(). It could occur if one end sends packets faster than the other end can process them. A guest user, maybe remote one, could use this flaw to stall the vhost_net kernel thread, resulting in a DoS scenario.

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

Refpacketstormsecurity.com/files/155212/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.htmlRefwww.securityfocus.com/bid/108076Refaccess.redhat.com/errata/RHSA-2019:1973Refaccess.redhat.com/errata/RHSA-2019:2029Refaccess.redhat.com/errata/RHSA-2019:2043Refaccess.redhat.com/errata/RHSA-2019:3220Refaccess.redhat.com/errata/RHSA-2019:3309Refaccess.redhat.com/errata/RHSA-2019:3517Refaccess.redhat.com/errata/RHSA-2019:3836Refaccess.redhat.com/errata/RHSA-2019:3967

How CyberStrike helps

Frequently asked questions

What is CVE-2019-3900?

CVE-2019-3900 is a high-severity vulnerability. It was published on April 25, 2019 and has a CVSS 3.1 base score of 7.7 (HIGH).

How severe is CVE-2019-3900?

This vulnerability has a CVSS 3.1 base score of 7.7, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2019-3900?

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-2019-3900?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-3900 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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