Linux cgroup Memory Limits Can Miss Kernel Network Use

A Linux cgroup, or control group, limits how much memory a group of processes can use. Yet its counters can look normal while those processes cause the host kernel, the core of the operating system, to use memory that is not counted against their limit. A networking patch posted on Sep 7, 2026 shows one way this can happen with IPv6 multicast routing, which sends network traffic to a group of recipients. The test creates routing tables inside namespaces: separate views of user identities and …LinuxSecurity – Security ArticlesRead More