An issue was discovered in Xen through 4.9.x allowing x86 guest OS users to cause a denial of service (hypervisor crash) or possibly gain privileges because MSI mapping was mishandled.
http://www.securitytracker.com/id/1039568
http://www.securityfocus.com/bid/101500
https://xenbits.xen.org/xsa/advisory-237.html
https://www.debian.org/security/2017/dsa-4050
https://support.citrix.com/article/CTX228867
https://security.gentoo.org/glsa/201801-14
https://lists.debian.org/debian-lts-announce/2018/10/msg00009.html
Source: Mitre, NVD
Published: 2017-10-18
Updated: 2025-04-20
Base Score: 4.6
Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P
Severity: Medium
Base Score: 8.8
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Severity: High
EPSS: 0.00071