Tails is an operating system that can be run on almost any computer from a USB stick or DVD. It aims to preserve your privacy and anonymity and helps you to do so.

This is an emergency release fixing critical vulnerabilities in Tor Browser.

Updates

• Updated Tor Browser to 9.0.4.
  Fixed critical vulnerability in JIT compiler
  JavaScript Firefox и Tor Browser.

  Mozilla is aware of targeted attacks that abuse this vulnerability.

  This vulnerability only affects standard ?security level Tor Browser. More safe и Most secure security layers are not affected by this vulnerability.

Rectification

• Fixed 2 minute delay during restart after auto update. (#17026)

For more information read our change log.

Source: linux.org.ru