An issue was discovered in Xen through 4.10.x allowing guest OS users to cause a denial of service (hypervisor crash) or gain privileges by triggering a grant-table transition from v2 to v1.
http://www.securityfocus.com/bid/103177
http://www.securitytracker.com/id/1040775
https://lists.debian.org/debian-lts-announce/2018/03/msg00003.html
https://lists.debian.org/debian-lts-announce/2018/11/msg00013.html
https://security.gentoo.org/glsa/201810-06
https://support.citrix.com/article/CTX232096
https://support.citrix.com/article/CTX232655
Source: MITRE
Published: 2018-02-27
Updated: 2019-10-03
Type: NVD-CWE-noinfo
Base Score: 6.1
Vector: AV:L/AC:L/Au:N/C:P/I:P/A:C
Impact Score: 8.5
Exploitability Score: 3.9
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
Impact Score: 6
Exploitability Score: 2
Severity: HIGH