An issue was discovered in Xen through 4.9.x allowing PV guest OS users to cause a denial of service (host OS crash) if shadow mode and log-dirty mode are in place, because of an incorrect assertion related to M2P.
Exploitability
AV:LAC:HPR:LUI:NScope
S:CImpact
C:NI:NA:H5.6/CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H