The ohci_bus_start function in the USB OHCI emulation support (hw/usb/hcd-ohci.c) in QEMU allows local guest OS administrators to cause a denial of service (NULL pointer dereference and QEMU process crash) via vectors related to multiple eof_timers.
Exploitability
AV:LAC:LPR:LUI:RScope
S:UImpact
C:NI:NA:H5/CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H