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Vulnerability record · CVE-2020-12430 · published 28 April 2020

CVE-2020-12430: Redhat libvirt memory leak vulnerability

Redhat · Libvirt

An issue was discovered in qemuDomainGetStatsIOThread in qemu/qemu_driver.c in libvirt 4.10.0 though 6.x before 6.1.0. A memory leak was found in the virDomainListGetStats libvirt API that is responsible for retrieving domain statistics when managing QEMU guests. This flaw allows unprivileged users with a read-only connection to cause a memory leak in the domstats command, resulting in a potential denial of service.

6.5 CVSS 3.1 Medium EPSS 2.3% · top 17.6% CWE-401 · Memory leak
6.5CVSS 3.1 base score, v2 4.0
2.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
14References
17 Jun 2026Last modified by NVD

Description

An issue was discovered in qemuDomainGetStatsIOThread in qemu/qemu_driver.c in libvirt 4.10.0 though 6.x before 6.1.0. A memory leak was found in the virDomainListGetStats libvirt API that is responsible for retrieving domain statistics when managing QEMU guests. This flaw allows unprivileged users with a read-only connection to cause a memory leak in the domstats command, resulting in a potential denial of service.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://bugzilla.redhat.com/show_bug.cgi?id=1804548 Issue TrackingPermissions RequiredVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1828190 Issue TrackingPatchVendor Advisory
https://libvirt.org/git/?p=libvirt.git%3Ba=commit%3Bh=9bf9e0ae6af38c806f4672ca7b12a6b38d5a9581
https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D5GE6ISYUL3CIWO3FQRUGMK
https://security.netapp.com/advisory/ntap-20200518-0003/
https://usn.ubuntu.com/4371-1/
https://bugzilla.redhat.com/show_bug.cgi?id=1804548 Issue TrackingPermissions RequiredVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1828190 Issue TrackingPatchVendor Advisory
https://libvirt.org/git/?p=libvirt.git%3Ba=commit%3Bh=9bf9e0ae6af38c806f4672ca7b12a6b38d5a9581
https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D5GE6ISYUL3CIWO3FQRUGMK
https://security.netapp.com/advisory/ntap-20200518-0003/
https://usn.ubuntu.com/4371-1/

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Source: NIST National Vulnerability Database (record CVE-2020-12430), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.