Recommendation is now to disable network namespaces to mitigate vulnerabilities due to their interaction with unprivileged user namespaces:
https://www.openwall.com/lists/oss-security/2024/04/14/1
That’s a sad outcome.
Recommendation is now to disable network namespaces to mitigate vulnerabilities due to their interaction with unprivileged user namespaces:
https://www.openwall.com/lists/oss-security/2024/04/14/1
That’s a sad outcome.
Incidentally, that’s another illustration that retrofitting namespaces in an ambient-authority monolithic kernel is tricky.
This is in contrast with the Hurd, where per-process views are an inherent part of the design.
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