"value":"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)."
},
{
"lang":"es",
"value":"Se ha encontrado un fallo en el controlador nwfilter de libvirt. El m\u00e9todo virNWFilterObjListNumOfNWFilters no adquir\u00eda el mutex driver->nwfilters antes de iterar sobre las instancias virNWFilterObj. No hab\u00eda protecci\u00f3n para evitar que otro hilo modificara simult\u00e1neamente el objeto driver->nwfilters. Este fallo permite a un usuario malicioso y sin privilegios aprovechar este problema a trav\u00e9s de la API virConnectNumOfNWFilters de libvirt para bloquear el demonio de gesti\u00f3n de filtros de red (libvirtd/virtnwfilterd)"