This release fixes [many security issues](
https://tails.boum.org/security/Nume
rous_security_holes_in_3.3/index.en.html) and users should upgrade as soon as
possible.
In particular, Tails 3.4 fixes the widely reported
[Meltdown](
https://meltdownattack.com/) attack, and includes the partial
mitigation for [Spectre](
https://spectreattack.com/).
# Changes
## Upgrades and changes
* Update _Linux_ to 4.14.12 which fixes [Meltdown](
https://meltdownattack.com/), [Spectre](
https://spectreattack.com/) (only partially) and many other issues. ([#14976](
https://labs.riseup.net/code/issues/14976))
## Fixed problems
* Fix an issue that made Tails start very slowly, in particular on DVD. ([#14964](
https://labs.riseup.net/code/issues/14964))
* Don't delete downloaded Debian packages after installing them. This is mostly relevant for users of the _APT Packages_ persistence feature. ([#10958](
https://labs.riseup.net/code/issues/10958))
* Fix an issue that prevented some Debian packages to install properly with the _Additional software_ feature. ([#6038](
https://labs.riseup.net/code/issues/6038))
* Update _uBlock Origin_ to restore its icon in _Tor Browser_, and make its settings dashboard work again. ([#14993](
https://labs.riseup.net/code/issues/14993))
For more details, read our [changelog](
https://git-
tails.immerda.ch/tails/plain/debian/changelog).
# Known issues
* The graphical splash screen usually displayed during Tails startup quickly disappears and is replaced by garbled text messages. As long as Tails appears to work fine for you otherwise, please ignore these messages, including the alarming message about a "kernel BUG" (which was [reported to Debian](
https://bugs.debian.org/886329)): they do not affect the safety of your Tails system.
* Due to [an issue in _Tor Browser_](
https://trac.torproject.org/projects/tor/ticket/24243), the documentation shipped in Tails doesn't open in _Tor Browser_ anymore and lacks our sidebar. The warning page of the _Unsafe Browser_ also lacks graphical design. ([#14962](
https://labs.riseup.net/code/issues/14962))
See the list of [long-standing
issues](
https://tails.boum.org/support/known_issues/index.en.html).
# Get Tails 3.4
* To install, follow our [installation instructions](
https://tails.boum.org/install/index.en.html).
* To upgrade, automatic upgrades are available from 3.2 and 3.3.
If you cannot do an automatic upgrade or if you fail to start after an
automatic upgrade, please try to do a [manual
upgrade](
https://tails.boum.org/upgrade/index.en.html).
* [Download Tails 3.4.](
https://tails.boum.org/install/download/index.en.html)
# What's coming up?
Tails 3.5 is [scheduled](
https://tails.boum.org/contribute/calendar/) for
January 23.
Have a look at our [roadmap](
https://tails.boum.org/contribute/roadmap) to see
where we are heading to.
We need your help and there are many ways to [contribute to
Tails](
https://tails.boum.org/contribute/index.en.html)
([donating](
https://tails.boum.org/donate?r=3.4) is only one of them). Come
[talk to us](
https://tails.boum.org/about/contact/index.en.html#tails-dev)!
URL:
https://tails.boum.org/news/version_3.4/index.en.html
