An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges by leveraging a page-writability race condition during addition of a passed-through PCI device.
Exploitability
AV:LAC:HPR:LUI:NScope
S:CImpact
C:HI:HA:H7.8/CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H