Don't worry about it, I changed it back. :)
** Changed in: sudo (Ubuntu Xenial)
Status: Fix Released => Fix Committed
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https://bugs.launchpad.net/bugs/1565567
Title:
segv in sudo_getgrgid
Status in sudo:
Unknown
Status in sudo package in Ubuntu:
Fix Released
Status in sudo source package in Xenial:
Fix Committed
Bug description:
[Impact]
In certain environments, for example when using LDAP, users can end up
in a group with no name. When that happens, sudo crashes when
attempting to look up the group name for the debug log.
Upstream has commited a simple fix for this issue, it has been
commited to Yakkety, and uploaded to Xenial.
[Test Case]
I currently don't know an easy way to reproduce this, it is
environment-specific. A package containing the fix was successfully
tested in the problematic environment.
[Regression Potential]
A regression in the patch would prevent users from using sudo. The
risk of regression is low since the patch only changes the debug log.
Original report:
If the user is in a group with no name (because libnss-db got removed
and the group was defined there, for example...) then:
the call to sudo_debug_printf in sudo_getgrgid
(plugins/sudoers/pwutil.c, line 462) causes a SEGV when trying to get
item->d.gr->gr_name (since item->d.gr is NULL).
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