This release is an emergency release to fix a critical security vulnerability
in _Tor Browser_.
# Updates
* Update _Tor Browser_ to [9.0.4](
https://blog.torproject.org/new-release-tor-browser-904).
This fixes a [critical vulnerability](
https://www.mozilla.org/en-
US/security/advisories/mfsa2020%2D03/) in the JavaScript JIT compiler of
_Firefox_ and _Tor Browser_.
Mozilla is aware of targeted attacks in the wild abusing this vulnerability.
This vulnerability only affects the _standard_
[?](
https://tails.boum.org/ikiwiki.cgi?do=create&from=news%2Fversion_4.2.2&page=doc%2Fanonymous_internet%2FTor_Browser.html)security
level of _Tor Browser_. The _safer_ and _safest_ security levels are not
affected.
# Fixed problems
* Avoid a 2-minutes delay when restarting after doing an automatic upgrade. (#17026)
For more details, read our
[changelog](
https://git.tails.boum.org/tails/plain/debian/changelog).
# Known issues
None specific to this release.
See the list of [long-standing
issues](
https://tails.boum.org/support/known_issues/index.en.html).
# Get Tails 4.2.2
## To upgrade your Tails USB stick and keep your persistent storage
* Automatic upgrades are available from 4.2 to 4.2.2.
Users of Tails 4.0, 4.1, and 4.1.1 have to upgrade to 4.2 first and then to
4.2.2.
* If you cannot do an automatic upgrade or if Tails fails to start after an automatic upgrade, please try to do a [manual upgrade](
https://tails.boum.org/doc/upgrade/index.en.html#manual).
## To install Tails on a new USB stick
Follow our installation instructions:
* [Install from Windows](
https://tails.boum.org/install/win/index.en.html)
* [Install from macOS](
https://tails.boum.org/install/mac/index.en.html)
* [Install from Linux](
https://tails.boum.org/install/linux/index.en.html)
All the data on this USB stick will be lost.
## To download only
If you don't need installation or upgrade instructions, you can directly
download Tails 4.2.2:
* [For USB sticks (USB image)](
https://tails.boum.org/install/download/index.en.html)
* [For DVDs and virtual machines (ISO image)](
https://tails.boum.org/install/download-iso/index.en.html)
# What's coming up?
Tails 4.3 is [scheduled](
https://tails.boum.org/contribute/calendar/) for
February 11.
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=4.2.2) 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_4.2.2/index.en.html
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