This bug was fixed in the package systemd - 229-4ubuntu11
---------------
systemd (229-4ubuntu11) xenial; urgency=medium
* 73-usb-net-by-mac.rules: Split kernel command line import line.
Reportedly this makes the rule actually work on some platforms. Thanks
Alp Toker! (LP: #1593379)
* fsckd: Do not exit on idle timeout if there are still clients connected
(Closes: #788050, LP: #1547844)
* libnss-*.prerm: Remove possible [key=value] options from NSS modules as
well. (LP: #1625584)
* Backport networkd 231. Compared to 229 this has a lot of fixes, some of
which we need for good netplan support. Backporting them individually
would be a lot more work and a lot less robust, and we did not use/support
networkd in 16.04 so far. Drop the other network related patches as they
are included in this backport now. (LP: #1627641)
* debian/tests/networkd: Re-enable the the DHCPv6 tests. The DHCPv6
behaviour is fixed with the above backport now.
* pid1: process zero-length notification messages again. Just remove the
assertion, the "n" value was not used anyway. This fixes a local DoS due
to unprocessed/unclosed fds which got introduced by the previous fix.
(LP: #1628687)
* pid1: Robustify manager_dispatch_notify_fd(). If
manager_dispatch_notify_fd() fails and returns an error then the handling
of service notifications will be disabled entirely leading to a
compromised system. (side issue of LP: #1628687)
-- Martin Pitt <martin.p...@ubuntu.com> Tue, 04 Oct 2016 21:43:04
+0200
** Changed in: systemd (Ubuntu Xenial)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1625584
Title:
Removing libnss-* does not remove corresponding options
Status in systemd package in Ubuntu:
Fix Released
Status in systemd source package in Xenial:
Fix Released
Bug description:
libnss-{resolve,mymachines,myhostname} automatically add/remove
themselves from /etc/nsswitch.conf on installation/removal.
But when (manually) adding NSS action specifiers, these do not get
removed along.
SRU FIX: https://anonscm.debian.org/cgit/pkg-
systemd/systemd.git/commit/?h=ubuntu-xenial&id=2d08d7e481
TEST CASE:
* Install libnss-mymachines. This will change the "hosts" line in
/etc/nsswitch.conf from e. g. "files dns" to "files dns mymachines".
* Edit the file to add an action specifier: "files dns mymachines
[!UNAVAIL=return]"
* Remove/purge libnss-mymachines.
* In current xenial (229-4ubuntu7)/yakkety (231-6) the hosts line ends up
as "files dns [!UNAVAIL=return]", i. e. the action specifier now applies to
"dns" but should have been removed.
* With the fixed version, the action specifier is completely gone.
* Re-test with installing libnss-resolve (which inserts itself before
"dns") and modifying to "files resolve [!UNAVAIL=return] dns [foo=bar]", then
purge libnss-resolve again -- this should again remove the [!UNAVAIL=return]
but *NOT* "dns [foo=bar]".
Regression potential: This only affects package removal, so upgrades
or new installs are not affected. Removals of
libnss-{mymachines,myhostname,resolvle} must be tested carefully to
ensure that they don't break nsswitch.conf in any way.
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