Уязвимость функции g_new0() библиотеки управления виртуализацией Libvirt, позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость функции udevListInterfacesByStatus() библиотеки libvirt, позволяющая нарушителю вызвать отказ в обслуживании

An off-by-one error flaw was found in the udevListInterfacesByStatus() function in libvirt when the number of interfaces exceeds the size of the `names` array. This issue can be reproduced by sending specially crafted data to the libvirt daemon, allowing an unprivileged client to perform a denial of service attack by causing the libvirt daemon to crash.

A flaw was found in the RPC library APIs of libvirt. The RPC server deserialization code allocates memory for arrays before the non-negative length check is performed by the C API entry points. Passing a negative length to the g_new0 function results in a crash due to the negative length being treated as a huge positive number. This flaw allows a local, unprivileged user to perform a denial of service attack by causing the libvirt daemon to crash.