CVE-2019-3840

libvirt: NULL pointer dereference after running qemuAgentCommand in qemuAgentGetInterfaces function

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Severity

Moderate

Red Hat Product Security

5.8

CVSS 3.0

Review impact separately from score.

Published · January 10, 2019

Updated · November 22, 2025

Description

A NULL pointer dereference flaw was discovered in libvirt in the way it gets interface information through the QEMU agent. An attacker in a guest VM can use this flaw to crash libvirtd and cause a denial of service.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 5.8
CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:N/A:H

CWE-476 · NULL Pointer Dereference