Tracker / CVE-2021-4197
CVE-2021-4197
High 7.8
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.
Affected products and versions
| broadcom | brocade_fabric_operating_system_firmware |
|---|---|
| debian | debian_linux |
| linux | linux_kernel · 4.15 → 4.19.238 |
| linux | linux_kernel · 4.2 → 4.14.276 |
| linux | linux_kernel · 4.20 → 5.4.189 |
| linux | linux_kernel · 5.11 → 5.15.14 |
| linux | linux_kernel · 5.5 → 5.10.111 |
| netapp | h300s_firmware |
| netapp | h410c_firmware |
| netapp | h410s_firmware |
| netapp | h500s_firmware |
| netapp | h700s_firmware |
| oracle | communications_cloud_native_core_binding_support_function |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.