A flaw was found in the libvirt nwfilter driver. The virNWFilterObjListNumOfNWFilters method failed to acquire the driver->nwfilters mutex before iterating over virNWFilterObj instances. There was no protection to stop another thread from concurrently modifying the driver->nwfilters object. This flaw allows a malicious, unprivileged user to exploit this issue via libvirt's API virConnectNumOfNWFilters to crash the network filter management daemon (libvirtd/virtnwfilterd).
{
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libnss-libvirt",
"binary_version": "4.0.0-1ubuntu8.21"
},
{
"binary_name": "libvirt-bin",
"binary_version": "4.0.0-1ubuntu8.21"
},
{
"binary_name": "libvirt-clients",
"binary_version": "4.0.0-1ubuntu8.21"
},
{
"binary_name": "libvirt-daemon",
"binary_version": "4.0.0-1ubuntu8.21"
},
{
"binary_name": "libvirt-daemon-driver-storage-gluster",
"binary_version": "4.0.0-1ubuntu8.21"
},
{
"binary_name": "libvirt-daemon-driver-storage-rbd",
"binary_version": "4.0.0-1ubuntu8.21"
},
{
"binary_name": "libvirt-daemon-driver-storage-sheepdog",
"binary_version": "4.0.0-1ubuntu8.21"
},
{
"binary_name": "libvirt-daemon-driver-storage-zfs",
"binary_version": "4.0.0-1ubuntu8.21"
},
{
"binary_name": "libvirt-daemon-system",
"binary_version": "4.0.0-1ubuntu8.21"
},
{
"binary_name": "libvirt-dev",
"binary_version": "4.0.0-1ubuntu8.21"
},
{
"binary_name": "libvirt-sanlock",
"binary_version": "4.0.0-1ubuntu8.21"
},
{
"binary_name": "libvirt-wireshark",
"binary_version": "4.0.0-1ubuntu8.21"
},
{
"binary_name": "libvirt0",
"binary_version": "4.0.0-1ubuntu8.21"
}
]
}
{
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libnss-libvirt",
"binary_version": "6.0.0-0ubuntu8.16"
},
{
"binary_name": "libvirt-clients",
"binary_version": "6.0.0-0ubuntu8.16"
},
{
"binary_name": "libvirt-daemon",
"binary_version": "6.0.0-0ubuntu8.16"
},
{
"binary_name": "libvirt-daemon-driver-lxc",
"binary_version": "6.0.0-0ubuntu8.16"
},
{
"binary_name": "libvirt-daemon-driver-qemu",
"binary_version": "6.0.0-0ubuntu8.16"
},
{
"binary_name": "libvirt-daemon-driver-storage-gluster",
"binary_version": "6.0.0-0ubuntu8.16"
},
{
"binary_name": "libvirt-daemon-driver-storage-rbd",
"binary_version": "6.0.0-0ubuntu8.16"
},
{
"binary_name": "libvirt-daemon-driver-storage-zfs",
"binary_version": "6.0.0-0ubuntu8.16"
},
{
"binary_name": "libvirt-daemon-driver-vbox",
"binary_version": "6.0.0-0ubuntu8.16"
},
{
"binary_name": "libvirt-daemon-driver-xen",
"binary_version": "6.0.0-0ubuntu8.16"
},
{
"binary_name": "libvirt-daemon-system",
"binary_version": "6.0.0-0ubuntu8.16"
},
{
"binary_name": "libvirt-daemon-system-systemd",
"binary_version": "6.0.0-0ubuntu8.16"
},
{
"binary_name": "libvirt-daemon-system-sysv",
"binary_version": "6.0.0-0ubuntu8.16"
},
{
"binary_name": "libvirt-dev",
"binary_version": "6.0.0-0ubuntu8.16"
},
{
"binary_name": "libvirt-sanlock",
"binary_version": "6.0.0-0ubuntu8.16"
},
{
"binary_name": "libvirt-wireshark",
"binary_version": "6.0.0-0ubuntu8.16"
},
{
"binary_name": "libvirt0",
"binary_version": "6.0.0-0ubuntu8.16"
}
]
}
{
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libnss-libvirt",
"binary_version": "8.0.0-1ubuntu7.5"
},
{
"binary_name": "libvirt-clients",
"binary_version": "8.0.0-1ubuntu7.5"
},
{
"binary_name": "libvirt-daemon",
"binary_version": "8.0.0-1ubuntu7.5"
},
{
"binary_name": "libvirt-daemon-config-network",
"binary_version": "8.0.0-1ubuntu7.5"
},
{
"binary_name": "libvirt-daemon-config-nwfilter",
"binary_version": "8.0.0-1ubuntu7.5"
},
{
"binary_name": "libvirt-daemon-driver-lxc",
"binary_version": "8.0.0-1ubuntu7.5"
},
{
"binary_name": "libvirt-daemon-driver-qemu",
"binary_version": "8.0.0-1ubuntu7.5"
},
{
"binary_name": "libvirt-daemon-driver-storage-gluster",
"binary_version": "8.0.0-1ubuntu7.5"
},
{
"binary_name": "libvirt-daemon-driver-storage-iscsi-direct",
"binary_version": "8.0.0-1ubuntu7.5"
},
{
"binary_name": "libvirt-daemon-driver-storage-rbd",
"binary_version": "8.0.0-1ubuntu7.5"
},
{
"binary_name": "libvirt-daemon-driver-storage-zfs",
"binary_version": "8.0.0-1ubuntu7.5"
},
{
"binary_name": "libvirt-daemon-driver-vbox",
"binary_version": "8.0.0-1ubuntu7.5"
},
{
"binary_name": "libvirt-daemon-driver-xen",
"binary_version": "8.0.0-1ubuntu7.5"
},
{
"binary_name": "libvirt-daemon-system",
"binary_version": "8.0.0-1ubuntu7.5"
},
{
"binary_name": "libvirt-daemon-system-systemd",
"binary_version": "8.0.0-1ubuntu7.5"
},
{
"binary_name": "libvirt-daemon-system-sysv",
"binary_version": "8.0.0-1ubuntu7.5"
},
{
"binary_name": "libvirt-dev",
"binary_version": "8.0.0-1ubuntu7.5"
},
{
"binary_name": "libvirt-login-shell",
"binary_version": "8.0.0-1ubuntu7.5"
},
{
"binary_name": "libvirt-sanlock",
"binary_version": "8.0.0-1ubuntu7.5"
},
{
"binary_name": "libvirt-wireshark",
"binary_version": "8.0.0-1ubuntu7.5"
},
{
"binary_name": "libvirt0",
"binary_version": "8.0.0-1ubuntu7.5"
}
]
}