[Tails-dev] is it safe to update these files in synaptic?

hi is it safe to update these files in synaptic?

[23 Feb 2016] DSA-3487 libssh2 - security update
[19 Feb 2016] DSA-3483 cpio - security update

there's a few others, too. the updates refuse to display
a changelog, IDK why.

there's one glibc or libc or something similar in Synaptic
which wants updating of 2 separate packages. but don't those
type of updates want a reboot?

i usually backup updates and reinstall them in new Tails
session, but i want to know what is safe to d/l without
waiting for a new Tails .ISO and without upgrading a usb.

Thank you.

Your pal,

Worf