An unprivileged write to the file handler flaw in the Linux kernels 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.
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Linux_kernel | Linux | 4.2 (including) | 4.14.276 (excluding) |
| Linux_kernel | Linux | 4.15 (including) | 4.19.238 (excluding) |
| Linux_kernel | Linux | 4.20 (including) | 5.4.189 (excluding) |
| Linux_kernel | Linux | 5.5 (including) | 5.10.111 (excluding) |
| Linux_kernel | Linux | 5.11 (including) | 5.15.14 (excluding) |