[Pkg-shadow-devel] Bug#562221: manpages of passwd and usermod report wrong instructions about locking accounts

[Justin T Pryzby]

Note that there's chage -E and usermod -e.  usermod -e advertizes its
input as being YYYY-MM-DD, chage advertizes its input as being the
same, or an integer in days since 1970.

So the problem is that usermod fails to sanitize its input.