# CVE-2020-12430: libnss-libvirt: An issue was discovered in qemuDomainGetStatsIOThread in qemu/qemu_driver.c in libvirt 4.10.0 though 6.x before 6.1.0

CVE-2020-12430 is fixed in 16 products on 1 platform, first by libnss-libvirt 6.0.0-0ubuntu6, released April 28, 2020. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2020-12430
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0228
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 28, 2020

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libnss-libvirt Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu6 | [libnss-libvirt 6.0.0-0ubuntu6](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libnss-libvirt-6.0.0-0ubuntu6.md) | Apr 28, 2020 |
| Linux | libvirt-clients Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu6 | [libvirt-clients 6.0.0-0ubuntu6](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libvirt-clients-6.0.0-0ubuntu6.md) | Apr 28, 2020 |
| Linux | libvirt-daemon Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu6 | [libvirt-daemon 6.0.0-0ubuntu6](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libvirt-daemon-6.0.0-0ubuntu6.md) | Apr 28, 2020 |
| Linux | libvirt-daemon-driver-lxc Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu6 | [libvirt-daemon-driver-lxc 6.0.0-0ubuntu6](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libvirt-daemon-driver-lxc-6.0.0-0ubuntu6.md) | Apr 28, 2020 |
| Linux | libvirt-daemon-driver-qemu Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu6 | [libvirt-daemon-driver-qemu 6.0.0-0ubuntu6](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libvirt-daemon-driver-qemu-6.0.0-0ubuntu6.md) | Apr 28, 2020 |
| Linux | libvirt-daemon-driver-storage-gluster Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu6 | [libvirt-daemon-driver-storage-gluster 6.0.0-0ubuntu6](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libvirt-daemon-driver-storage-gluster-6.0.0-0ubuntu6.md) | Apr 28, 2020 |
| Linux | libvirt-daemon-driver-storage-rbd Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu6 | [libvirt-daemon-driver-storage-rbd 6.0.0-0ubuntu6](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libvirt-daemon-driver-storage-rbd-6.0.0-0ubuntu6.md) | Apr 28, 2020 |
| Linux | libvirt-daemon-driver-storage-zfs Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu6 | [libvirt-daemon-driver-storage-zfs 6.0.0-0ubuntu6](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libvirt-daemon-driver-storage-zfs-6.0.0-0ubuntu6.md) | Apr 28, 2020 |
| Linux | libvirt-daemon-driver-vbox Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu6 | [libvirt-daemon-driver-vbox 6.0.0-0ubuntu6](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libvirt-daemon-driver-vbox-6.0.0-0ubuntu6.md) | Apr 28, 2020 |
| Linux | libvirt-daemon-driver-xen Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu6 | [libvirt-daemon-driver-xen 6.0.0-0ubuntu6](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libvirt-daemon-driver-xen-6.0.0-0ubuntu6.md) | Apr 28, 2020 |
| Linux | libvirt-daemon-system Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu6 | [libvirt-daemon-system 6.0.0-0ubuntu6](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libvirt-daemon-system-6.0.0-0ubuntu6.md) | Apr 28, 2020 |
| Linux | libvirt-daemon-system-systemd Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu6 | [libvirt-daemon-system-systemd 6.0.0-0ubuntu6](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libvirt-daemon-system-systemd-6.0.0-0ubuntu6.md) | Apr 28, 2020 |
| Linux | libvirt-daemon-system-sysv Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu6 | [libvirt-daemon-system-sysv 6.0.0-0ubuntu6](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libvirt-daemon-system-sysv-6.0.0-0ubuntu6.md) | Apr 28, 2020 |
| Linux | libvirt-sanlock Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu6 | [libvirt-sanlock 6.0.0-0ubuntu6](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libvirt-sanlock-6.0.0-0ubuntu6.md) | Apr 28, 2020 |
| Linux | libvirt-wireshark Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu6 | [libvirt-wireshark 6.0.0-0ubuntu6](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libvirt-wireshark-6.0.0-0ubuntu6.md) | Apr 28, 2020 |
| Linux | libvirt0 Ubuntu 20.04 LTS (focal) | 6.0.0-0ubuntu6 | [libvirt0 6.0.0-0ubuntu6](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libvirt0-6.0.0-0ubuntu6.md) | Apr 28, 2020 |

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