What’s Vulnerable › Vulnerabilities
CVE-2020-12430
- Severity: medium (CVSS 6.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 2.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2020-04-28 · updated 2026-06-17
- Weakness: CWE-401
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.
Affected products
- Red Hat Enterprise Linux: 8.0
- libvirt: from 4.10.0 before 6.1.0 — fixed in 6.1.0
How to fix
Upgrade to a fixed version: libvirt 6.1.0. Check the vendor advisory for mitigations.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1804548
- https://bugzilla.redhat.com/show_bug.cgi?id=1828190
- 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/D5GE6ISYUL3CIWO3FQRUGMKTKP2NYED2/
- https://security.netapp.com/advisory/ntap-20200518-0003/
- https://usn.ubuntu.com/4371-1/
- https://bugzilla.redhat.com/show_bug.cgi?id=1804548
- https://bugzilla.redhat.com/show_bug.cgi?id=1828190
- 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/D5GE6ISYUL3CIWO3FQRUGMKTKP2NYED2/
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