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.
- The first point release, 9.1, was released on July 22, 2017.
- The second point release, 9.2, was released on October 7, 2017.
- The third point release, 9.3, was released on December 9, 2017.
- The fourth point release, 9.4, was released on March 10, 2018.
- The fifth point release, 9.5, was released on July 14, 2018.
- The sixth point release, 9.6, was released on November 10, 2018.
- The seventh point release, 9.7, was released on January 23, 2019.
- The eighth point release, 9.8, was released on February 16, 2019.
- The ninth point release, 9.9, was released on April 27, 2019.
- The tenth point release 9.10, was released on September 7, 2019.
- The eleventh point release 9.11, was released on September 8, 2019.
- The twelfth point release 9.12, was released on February 8, 2020.
- The thirteenth point release 9.13, was released on July 18, 2020.
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.