CVE-2020-29568

MediumCVSS 6.5/10Last modified Jun 17, 2026

Description

An issue was discovered in Xen through 4.14.x. Some OSes (such as Linux, FreeBSD, and NetBSD) are processing watch events using a single thread. If the events are received faster than the thread is able to handle, they will get queued. As the queue is unbounded, a guest may be able to trigger an OOM in the backend. All systems with a FreeBSD, Linux, or NetBSD (any version) dom0 are vulnerable.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Weakness enumeration

CWE-770

Affected software

No affected versions have been published.

Timeline

Published: Dec 15, 2020
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2020

CVE-2020-295698.8An issue was discovered in the Linux kernel through 5.10.1, as used with Xen through 4.14.x. The Linux kernel PV block backend expects the k CVE-2020-295706.2An 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 t CVE-2020-295716.2An issue was discovered in Xen through 4.14.x. A bounds check common to most operation time functions specific to FIFO event channels depend CVE-2020-295726.1app/View/Elements/genericElements/SingleViews/Fields/genericField.ctp in MISP 2.4.135 has XSS via the authkey comment field.CVE-2020-295737.5sysdeps/i386/ldbl2mpn.c in the GNU C Library (aka glibc or libc6) before 2.23 on x86 targets has a stack-based buffer overflow if the input CVE-2020-295749.8An SQL injection vulnerability in the WebAdmin of Cyberoam OS through 2020-12-04 allows unauthenticated attackers to execute arbitrary SQL s CVE-2020-295759.8The official elixir Docker images before 1.8.0-alpine (Alpine specific) contain a blank password for a root user. Systems using the elixir L CVE-2020-295769.8The official eggdrop Docker images before 1.8.4rc2 contain a blank password for a root user. Systems using the Eggdrop Docker container depl CVE-2020-295779.8The official znc docker images before 1.7.1-slim contain a blank password for a root user. Systems using the znc docker container deployed b CVE-2020-295789.8The official piwik Docker images before fpm-alpine (Alpine specific) contain a blank password for a root user. Systems using the Piwik Docke CVE-2020-295799.8The official Express Gateway Docker images before 1.14.0 contain a blank password for a root user. Systems using the Express Gateway Docker CVE-2020-29587.5Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). Supported versions that are affected are Prior