Security Information

Experience has shown that security through obscurity never works. Therefore, public disclosure allows for quicker and better solutions of security problems. In that respect, this page addresses Debian's status regarding various known security holes, which could potentially affect the Debian operating system.

The Debian project coordinates many security advisories with other free software vendors, and as a result, these advisories are published the same day a vulnerability is made public.

Debian also participates in security standardization efforts:

Keeping your Debian System secure

In order to receive the latest Debian security advisories, please subscribe to the debian-security-announce mailing list.

On top of that, you can use APT to easily get the latest security updates. To keep your Debian operating system up-to-date with security patches, please add the following line to your /etc/apt/sources.list file: 

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

After saving the changes, run the following two commands to download and install the pending updates: 

apt-get update && apt-get upgrade

The security archive is signed with the usual Debian archive keys.

For more information about security issues in Debian, please refer to our FAQ and our documentation:

Recent Advisories

These web pages include a condensed archive of security advisories posted to the debian-security-announce list.

[25 Mar 2023] DSA-5378-1 xen security update
[23 Mar 2023] DSA-5377-1 chromium security update
[20 Mar 2023] DSA-5376-1 apache2 security update
[17 Mar 2023] DSA-5375-1 thunderbird security update
[17 Mar 2023] DSA-5356-2 sox security update
[15 Mar 2023] DSA-5374-1 firefox-esr security update
[14 Mar 2023] DSA-5373-1 node-sqlite3 security update
[13 Mar 2023] DSA-5372-1 rails security update
[09 Mar 2023] DSA-5371-1 chromium security update
[07 Mar 2023] DSA-5370-1 apr security update
[05 Mar 2023] DSA-5369-1 syslog-ng security update
[03 Mar 2023] DSA-5368-1 libreswan security update
[02 Mar 2023] DSA-5367-1 spip security update
[01 Mar 2023] DSA-5366-1 multipath-tools security update
[27 Feb 2023] DSA-5365-1 curl security update
[26 Feb 2023] DSA-5364-1 apr-util security update
[24 Feb 2023] DSA-5363-1 php7.4 security update
[24 Feb 2023] DSA-5362-1 frr security update
[24 Feb 2023] DSA-5361-1 tiff security update

The latest Debian security advisories are available as RDF files. We also offer a slightly longer version of the files which includes the first paragraph of the corresponding advisory. That way you can easily spot what the advisory is about.

Older security advisories are also available: 2023, 2022, 2021, 2020, 2019, 2018, 2017, 2016, 2015, 2014, 2013, 2012, 2011, 2010, 2009, 2008, 2007, 2006, 2005, 2004, 2003, 2002, 2001, 2000, 1999, 1998, 1997 and undated security advisories, included for posterity.

Debian distributions are not vulnerable to all security problems. The Debian Security Tracker collects all information about the vulnerability status of Debian packages. It can be searched by CVE name or by package.