Qemu emulator built with the e1000 NIC emulation support is vulnerable to an infinite loop issue. It could occur while processing transmit descriptor data when sending a network packet.

A privileged user inside guest could use this flaw to crash the Qemu instance resulting in DoS.

Upstream fix: ------------- -> https://lists.gnu.org/archive/html/qemu-devel/2015-09/msg01199.html

Xen 4.2.x through 4.5.x does not initialize certain fields, which allows certain remote service domains to obtain sensitive information from memory via a (1) XENDOMCTLgettscinfo or (2) XENSYSCTLgetdomaininfolist request.