** Changed in: linux (Ubuntu)
Status: Incomplete => Invalid
** Changed in: linux (Ubuntu Mantic)
Status: Incomplete => Fix Committed
** Changed in: linux (Ubuntu Mantic)
Assignee: (unassigned) => John Johansen (jjohansen)
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https://bugs.launchpad.net/bugs/2040194
Title:
apparmor restricts read access of user namespace mediation sysctls to
root
Status in linux package in Ubuntu:
Invalid
Status in linux source package in Mantic:
Fix Committed
Bug description:
lxc and lxd currently need to determine if the apparmor restriction
on unprivileged user namespaces are being enforced, so that apparmor
restrictions won't break lxc/d, and they won't clutter the logs
by doing something like
unshare true
to test if the restrictions are being enforced.
Ideally access to this information would be restricted so that any
unknown access would be logged, but lxc/d currently aren't ready for
this so in order to _not_ force lxc/d to probe whether enforcement is
enabled, open up read access to the sysctls for unprivileged user
namespace mediation.
https://github.com/canonical/lxd/issues/11920#issuecomment-1756110109
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