The evtchn_fifo_set_pending function in Xen 4.4.x allows local guest users to cause a denial of service (host crash) via vectors involving an uninitialized FIFO-based event channel control block when (1) binding or (2) moving an event to a different VCPU.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 21.4%