** Changed in: linux (Ubuntu Xenial)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1778286
Title:
Backport namespaced fscaps to xenial 4.4
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Xenial:
Fix Committed
Bug description:
SRU Justification
Impact: Support for using filesystem capabilities in unprivileged user
namespaces was added upstream in Linux 4.14. This is a useful feature
that allows unprivileged containers to set fscaps that are valid only
in user namespaces where a specific kuid is mapped to root. This
allows for e.g. support for Linux distros within lxd which make use of
filesystem capabilities.
Fix: Backport upstream commit 8db6c34f1dbc "Introduce v3 namespaced
file capabilities" and any subsequent fixes to xenial 4.4.
Test Case: Test use of fscaps within a lxd container.
Regression Potential: This has been upstream since 4.14 (and thus is
present in bionic), and the backport to xenial 4.4 was
straightforward, so regression potential is low.
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