An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service because of an incompatibility between Process Context Identifiers (PCID) and shadow-pagetable switching.
https://www.debian.org/security/2020/dsa-4602
https://seclists.org/bugtraq/2020/Jan/21
https://xenbits.xen.org/xsa/advisory-294.html
http://xenbits.xen.org/xsa/advisory-294.html
http://www.openwall.com/lists/oss-security/2019/10/25/7
Source: Mitre, NVD
Published: 2019-10-08
Updated: 2023-02-03
Base Score: 4.9
Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C
Severity: Medium
Base Score: 6.5
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
EPSS: 0.0019