CVE-2021-28039

 

Published at: - 05-03-2021 07:15

Last modified: - 20-05-2022 10:47

Total changes: - 4

Description

An issue was discovered in the Linux kernel 5.9.x through 5.11.3, as used with Xen. In some less-common configurations, an x86 PV guest OS user can crash a Dom0 or driver domain via a large amount of I/O activity. The issue relates to misuse of guest physical addresses when a configuration has CONFIG_XEN_UNPOPULATED_ALLOC but not CONFIG_XEN_BALLOON_MEMORY_HOTPLUG.

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

• http://xenbits.xen.org/xsa/advisory-369.html
• [oss-security] 20210305 Xen Security Advisory 369 v2 (CVE-2021-28039) - Linux: special config may crash when trying to map foreign pages-Mailing List, Patch, Third Party Advisory
• https://security.netapp.com/advisory/ntap-20210409-0001/

 

Keywords

NVD

 

CVE-2021-28039

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures