Buffer overflow in hw/pt-msi.c in Xen 4.6.x and earlier, when using the qemu-xen-traditional (aka qemu-dm) device model, allows local x86 HVM guest administrators to gain privileges by leveraging a system with access to a passed-through MSI-X capable physical PCI device and MSI-X table entries, related to a "write path."
Exploitability
AV:LAC:HPR:HUI:NScope
S:CImpact
C:HI:HA:H7.5/CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H