CVE-2021-4197

 

Published at: - 23-03-2022 09:15

Last modified: - 25-07-2022 08:18

Total changes: - 8

Description

An unprivileged write to the file handler flaw in the Linux kernel's control groups and namespaces subsystem was found in the way users have access to some less privileged process that are controlled by cgroups and have higher privileged parent process. It is actually both for cgroup2 and cgroup1 versions of control groups. A local user could use this flaw to crash the system or escalate their privileges on the system.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://bugzilla.redhat.com/show_bug.cgi?id=2035652
• https://lore.kernel.org/lkml/20211209214707.805617-1-tj@kernel.org/T/
• DSA-5127-
• https://security.netapp.com/advisory/ntap-20220602-0006/
• DSA-5173-
• N/A-

 

Keywords

NVD

 

CVE-2021-4197

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures