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New Linux Kernel Cgroups Vulnerability Could Let Attackers Escape Container

Submitted by Roy Schestowitz on Saturday 5th of March 2022 11:09:33 AM Filed under
Linux
Security

Details have emerged about a now-patched high-severity vulnerability in the Linux kernel that could potentially be abused to escape a container in order to execute arbitrary commands on the container host.

The shortcoming resides in a Linux kernel feature called control groups, also referred to as cgroups version 1 (v1), which allows processes to be organized into hierarchical groups, effectively making it possible to limit and monitor the usage of resources such as CPU, memory, disk I/O, and network.

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