CVE-2020-29568

 

Published at: - 15-12-2020 06:15

Last modified: - 26-04-2022 06:12

Total changes: - 7

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.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://xenbits.xenproject.org/xsa/advisory-349.html
• DSA-4843-Third Party Advisory
• [debian-lts-announce] 20210212 [SECURITY] [DLA 2557-1] linux-4.19 security update-Mailing List, Third Party Advisory
• [debian-lts-announce] 20210309 [SECURITY] [DLA 2586-1] linux security update-Mailing List, Third Party Advisory
• GLSA-202107-30-Third Party Advisory

 

Keywords

NVD

 

CVE-2020-29568

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures