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.

[28 Nov 2022] DSA-5291-1 mujs security update
[28 Nov 2022] DSA-5290-1 commons-configuration2 security update
[27 Nov 2022] DSA-5289-1 chromium security update
[25 Nov 2022] DSA-5288-1 graphicsmagick security update
[22 Nov 2022] DSA-5287-1 heimdal security update
[19 Nov 2022] DSA-5286-1 krb5 security update
[17 Nov 2022] DSA-5285-1 asterisk security update
[17 Nov 2022] DSA-5284-1 thunderbird security update
[17 Nov 2022] DSA-5283-1 jackson-databind security update
[17 Nov 2022] DSA-5279-2 wordpress security update
[16 Nov 2022] DSA-5282-1 firefox-esr security update
[15 Nov 2022] DSA-5281-1 nginx security update
[15 Nov 2022] DSA-5280-1 grub2 security update
[15 Nov 2022] DSA-5279-1 wordpress security update
[13 Nov 2022] DSA-5278-1 xorg-server security update
[13 Nov 2022] DSA-5277-1 php7.4 security update
[12 Nov 2022] DSA-5276-1 pixman security update
[10 Nov 2022] DSA-5275-1 chromium security update
[08 Nov 2022] DSA-5274-1 wpewebkit security update
[08 Nov 2022] DSA-5273-1 webkit2gtk security update
[06 Nov 2022] DSA-5272-1 xen security update
[05 Nov 2022] DSA-5271-1 libxml2 security update
[04 Nov 2022] DSA-5270-1 ntfs-3g security update
[02 Nov 2022] DSA-5269-1 pypy3 security update
[01 Nov 2022] DSA-5268-1 ffmpeg security update
[30 Oct 2022] DSA-5267-1 pysha3 security update
[30 Oct 2022] DSA-5266-1 expat 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: 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.