An issue was discovered in Xen through 4.12.x allowing Arm domU attackers to cause a denial of service (infinite loop) involving a compare-and-exchange operation.Referenceshttp://xenbits.xen.org/xsa/advisory-295.htmlhttps://xenbits.xen.org/xsa/advisory-295.htmlhttps://www.debian.org/security/2020/dsa-4602https://seclists.org/bugtraq/2020/Jan/21
