An issue was discovered in Xen through 4.10.x allowing x86 PV guest OS users to cause a denial of service (out-of-bounds zero write and hypervisor crash) via unexpected INT 80 processing, because of an incorrect fix for CVE-2017-5754.
Exploitability
AV:LAC:LPR:LUI:NScope
S:CImpact
C:NI:NA:H6.5/CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H