USN-6126-1: libvirt vulnerabilities

Releases

• Ubuntu 23.04
• Ubuntu 22.10
• Ubuntu 22.04 LTS

Packages

• libvirt - Libvirt virtualization toolkit

Details

It was discovered that libvirt incorrectly handled the nwfilter driver. A
local attacker could possibly use this issue to cause libvirt to crash,
resulting in a denial of service. This issue only affected Ubuntu 22.04
LTS. (CVE-2022-0897)

It was discovered that libvirt incorrectly handled queries for the SR-IOV
PCI device capabilities. A local attacker could possibly use this issue to
cause libvirt to consume resources, leading to a denial of service.
(CVE-2023-2700)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 23.04

• libvirt-daemon - 9.0.0-2ubuntu1.1
• libvirt-daemon-system - 9.0.0-2ubuntu1.1
• libvirt0 - 9.0.0-2ubuntu1.1

Ubuntu 22.10

• libvirt-daemon - 8.6.0-0ubuntu3.2
• libvirt-daemon-system - 8.6.0-0ubuntu3.2
• libvirt0 - 8.6.0-0ubuntu3.2

Ubuntu 22.04

• libvirt-daemon - 8.0.0-1ubuntu7.5
• libvirt-daemon-system - 8.0.0-1ubuntu7.5
• libvirt0 - 8.0.0-1ubuntu7.5

After a standard system update you need to reboot your computer to make all
the necessary changes.

References

• CVE-2022-0897
• CVE-2023-2700

Related notices

• USN-5399-1: libvirt-daemon-driver-lxc, libnss-libvirt, libvirt-daemon, libvirt-daemon-system, libvirt-clients, libvirt, libvirt-daemon-driver-xen, libvirt-sanlock, libvirt-daemon-driver-storage-sheepdog, libvirt-daemon-driver-storage-zfs, libvirt-daemon-driver-qemu, libvirt-daemon-config-network, libvirt-doc, libvirt-daemon-config-nwfilter, libvirt-dev, libvirt-login-shell, libvirt-daemon-driver-vbox, libvirt-daemon-driver-storage-rbd, libvirt-daemon-driver-storage-iscsi-direct, libvirt0, libvirt-daemon-driver-storage-gluster, libvirt-bin, libvirt-daemon-system-sysv, libvirt-daemon-system-systemd, libvirt-wireshark