Security Advisory

CVE-2020-29570

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2020-12-15 17:01:36
Last updated 2024-08-04 16:55:10
Assigner mitre
State PUBLISHED

Description

An issue was discovered in Xen through 4.14.x. Recording of the per-vCPU control block mapping maintained by Xen and that of pointers into the control block is reversed. The consumer assumes, seeing the former initialized, that the latter are also ready for use. Malicious or buggy guest kernels can mount a Denial of Service (DoS) attack affecting the entire system.