CVE-2021-20321

 

Published at: - 18-02-2022 07:15

Last modified: - 26-10-2022 01:44

Total changes: - 6

Description

A race condition accessing file object in the Linux kernel OverlayFS subsystem was found in the way users do rename in specific way with OverlayFS. A local user could use this flaw to crash the system.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://bugzilla.redhat.com/show_bug.cgi?id=2013242
• https://lore.kernel.org/all/20211011134508.748956131@linuxfoundation.org/
• [debian-lts-announce] 20220309 [SECURITY] [DLA 2941-1] linux-4.19 security update-Mailing List, Third Party Advisory
• DSA-5096-Third Party Advisory

 

Keywords

NVD

 

CVE-2021-20321

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures