vulnerability
Arch Linux: Improper Authentication (CVE-2021-4197)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:L/Au:N/C:C/I:C/A:C) | Mar 23, 2022 | Jul 11, 2025 | Feb 12, 2026 |
Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
Mar 23, 2022
Added
Jul 11, 2025
Modified
Feb 12, 2026
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.
Solution
arch-linux-upgrade-latest
References
- CVE-2021-4197
- https://attackerkb.com/topics/CVE-2021-4197
- URL-https://bugzilla.redhat.com/show_bug.cgi?id=2035652
- URL-https://lore.kernel.org/lkml/20211209214707.805617-1-tj%40kernel.org/T/
- URL-https://security.netapp.com/advisory/ntap-20220602-0006/
- URL-https://www.debian.org/security/2022/dsa-5127
- URL-https://www.debian.org/security/2022/dsa-5173
- URL-https://www.oracle.com/security-alerts/cpujul2022.html
- CWE-287
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