Improper Authentication Affecting kernel-doc package, versions <0:4.18.0-305.57.1.el8_4
Threat Intelligence
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk ID SNYK-RHEL8-KERNELDOC-4193312
- published 4 Jan 2022
- disclosed 12 Sep 2021
Introduced: 12 Sep 2021
CVE-2021-4197 Open this link in a new tabHow to fix?
Upgrade RHEL:8 kernel-doc to version 0:4.18.0-305.57.1.el8_4 or higher.
This issue was patched in RHSA-2022:5626.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-doc package and not the kernel-doc package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
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.
References
- https://access.redhat.com/security/cve/CVE-2021-4197
- https://bugzilla.redhat.com/show_bug.cgi?id=2035652
- https://lore.kernel.org/lkml/20211209214707.805617-1-tj@kernel.org/T/
- https://security.netapp.com/advisory/ntap-20220602-0006/
- https://www.debian.org/security/2022/dsa-5127
- https://www.debian.org/security/2022/dsa-5173
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://lore.kernel.org/lkml/20211209214707.805617-1-tj%40kernel.org/T/