Debian 9 -- Errata

Security issues

Debian security team issues updates to packages in the stable release in which they've identified problems related to security. Please consult the security pages for information about any security issues identified in Stretch.

If you use APT, add the following line to /etc/apt/sources.list to be able to access the latest security updates:

  deb http://security.debian.org/ stretch/updates main contrib non-free

After that, run apt-get update followed by apt-get upgrade.

Point releases

Sometimes, in the case of several critical problems or security updates, the released distribution is updated. Generally, these are indicated as point releases.

See the ChangeLog for details on changes between 9.0 and 9.13.

Fixes to the released stable distribution often go through an extended testing period before they are accepted into the archive. However, these fixes are available in the dists/stretch-proposed-updates directory of any Debian archive mirror.

If you use APT to update your packages, you can install the proposed updates by adding the following line to /etc/apt/sources.list:

  # proposed additions for a 9 point release
  deb http://ftp.us.debian.org/debian stretch-proposed-updates main contrib non-free

After that, run apt-get update followed by apt-get upgrade.

Installation system

For information about errata and updates for the installation system, see the installation information page.