You are running Debian stable, because you prefer the Debian stable tree. It runs great, there is just one problem: the software is a little bit outdated compared to other distributions. This is where backports come in.

Backports are packages taken from the next Debian release (called "testing"), adjusted and recompiled for usage on Debian stable. Because the package is also present in the next Debian release, you can easily upgrade your stable+backports system once the next Debian release comes out. (In a few cases, usually for security updates, backports are also created from the Debian unstable distribution.)

Backports cannot be tested as extensively as Debian stable, and backports are provided on an as-is basis, with risk of incompatibilities with other components in Debian stable. Use with care!

It is therefore recommended to only select single backported packages that fit your needs, and not use all available backports.

Where to start


With the release of stretch we are pleased to open the doors for stretch-backports and jessie-backports-sloppy. \o/

As usual with a new release we will change a few things for the backports service.

What to upload where

As a reminder, uploads to a release-backports pocket are to be taken from release + 1, uploads to a release-backports-sloppy pocket are to be taken from release + 2. Which means:

Source Distribution Backports Distribution Sloppy Distribution
buster stretch-backports jessie-backports-sloppy
stretch jessie-backports -

Deprecation of LTS support for backports

We started supporting backports as long as there is LTS support as an experiment. Unfortunately it didn't worked, most maintainers didn't wanted to support oldoldstable-backports (squeeze) for the lifetime of LTS. So things started to rot in squeeze and most packages didn't received updates. After long discussions we decided to deprecate LTS support for backports. From now on squeeze-backports(-sloppy) is closed and will not receive any updates. Expect it to get removed from the mirrors and moved to archive in the near future.

BSA handling

We - the backports team - didn't scale well in processing BSA requests. To get things better in the future we decided to change the process a little bit. If you upload a package which fixes security problems please fill out the BSA template and create a ticket in the rt tracker (see for details).

Stretching the rules

From time to time its necessary to not follow the backports rules, like a package needs to be in testing or a version needs to be in Debian. If you think you have one of those cases, please talk to us on the list before upload the package.


Thanks have to go out to all people making backports possible, and that includes up front the backporters themself who do upload the packages, track and update them on a regular basis, but also the buildd team making the autobuilding possible and the ftp masters for creating the suites in the first place.

We wish you a happy stretch :) Alex, on behalf of the Backports Team

Posted Mon Jun 26 20:38:45 2017
Henrique de Moraes Holschuh uploaded new packages for iucode-tool which
fixed the following security problems:

  iucode-tool v1.4 to v2.1 is vulnerable to a heap buffer overflow in
  the -tr (recovery) loader.  Using specially-crafted data files and a
  specially crafted command line, it might be possible to leverage this
  heap buffer overflow to cause heap corruption, which might allow an
  attacker to run arbitrary code.

For the jessie-backports distribution the problem has been fixed in
version 2.1.1-1~bpo8+1.

For the wheezy-backports distribution, no fix is necessary.

For users building directly from the git repository, all
debian/release/* branches have been updated with fixed versions where
Posted Tue Jan 24 15:52:02 2017
Craig Small <> uploaded new packages for wordpress
which fixed the following security problems:

CVE-2016-10066, CVE-2016-10045
  Potential Remote Command Execution (RCE) in PHPMailer
  Authenticated Cross-Site scripting (XSS) in update-core.php
  Stored Cross-Site Scripting (XSS) via Theme Name fallback
  Post via Email Checks by Default
  Accessibility Mode Cross-Site Request Forgery (CSRF)
  Cryptographically Weak Pseudo-Random Number Generator
  User Information Disclosure via REST API - API doesn't exist
  Cross-Site Request Forgery (CSRF) via Flash Upload

For the jessie-backports distribution the problems have been fixed in
version 4.7.1+dfsg-1~bpo8+1
Posted Mon Jan 23 07:39:04 2017
Harlan Lieberman-Berg uploaded new packages for ansible which fixed the
following security problems:

  Predictable filenames could allow an attacker to a user to execute
  arbitrary commands as root inside an lxc_container managed container.

For the jessie-backports distribution, the problem has been fixed in
Posted Thu May 12 00:04:31 2016
Ryan Tandy uploaded new packages for openldap which fixed the
following security problems:

  Denis Andzakovic discovered that OpenLDAP, a free implementation of the
  Lightweight Directory Access Protocol, does not properly handle BER data.
  An unauthenticated remote attacker can use this flaw to cause a denial of
  service (slapd daemon crash) via a specially crafted packet.

For the wheezy-backports distribution the problems have been fixed in
version 2.4.31+really2.4.40+dfsg-1+deb8u1~bpo70+1.

The jessie-backports suite does not contain openldap packages, while for
Debian stable suites the issue has been fixed by DSA-3356-1 (jessie and
wheezy) and DLA-309-1 (squeeze).
Posted Tue Sep 22 16:38:10 2015
Christian Seiler prepared new packages for lxc which fixed the following
security problems:

  Roman Fiedler discovered a directory traversal flaw in LXC when
  creating lock files. A local attacker could exploit this flaw to
  create an arbitrary file as the root user.

  Roman Fiedler discovered that LXC incorrectly trusted the container's
  proc filesystem to set up AppArmor profile changes and SELinux domain
  transitions. A malicious container could create a fake proc
  filesystem and use this flaw to run programs inside the container
  that are not confined by AppArmor or SELinux.

For the wheezy-backports distribution the problems have been fixed in
version 1.0.6-6+deb8u1~bpo70+1.
Posted Fri Aug 7 18:01:17 2015
Christian Hofstaedtler uploaded new packages for pdns and
pdns-server which fixed the following security problem:

CVE-2015-1868: The label decompression functionality in PowerDNS
Recursor 3.5.x, 3.6.x before 3.6.3, and 3.7.x before 3.7.2 and
Authoritative (Auth) Server 3.2.x, 3.3.x before 3.3.2, and 3.4.x
before 3.4.4 allows remote attackers to cause a denial of service
(CPU consumption or crash) via a request with a name that refers to

For the wheezy-backports distribution the problems have been fixed
in pdns version 3.4.1-4+deb8u1~bpo70+1, and in pdns-recursor
version 3.6.2-2+deb8u1~bpo70+1.
Posted Mon Jun 22 20:21:25 2015
Thomas Goirand uploaded new packages for horizon which fixed the
following security problem:

  Sunil Yadav from IBM Security Services reported a persistent XSS in
  Horizon. An authenticated user may conduct a persistent XSS attack by
  setting a malicious metadata to a Glance image, a Nova flavor or a
  Host Aggregate and tricking an administrator to load the update
  metadata page. Once executed in a legitimate context this attack may
  result in a privilege escalation.

For the jessie-backports distribution the problems have been fixed in
Posted Tue May 26 07:41:43 2015
Wouter Verhelst uploaded new packages for nbd which fixed the following
security problems:

  Tuomas Räsänen discovered that nbd-server unsafe signal handling in
  nbd-server, the server for the Network Block Device protocol, could
  allow remote attackers to cause a deadlock in the server process and
  thus a denial of service.

  Tuomas Räsänen discovered that the modern-style negotiation was
  carried out in the main process before forking the actual client
  handler. This could allow a remote attacker to cause a denial of
  service (crash) by querying a non-existent export.

For the squeeze-backports distribution,the problems have been fixed in
version 1:3.2-4~deb7u5~bpo60+1.

The wheezy-backports and jessie-backports suites do not contain nbd
packages, and therefore are not vulnerable (but see DSA-3271-1).
Posted Sun May 24 17:46:24 2015
Rene Engelhard uploaded new packages for libreoffice which fixed the
following security problem:

   It was discovered that missing input sanitising in Libreoffice's filter
   for HWP documents may result in the execution of arbitrary code if a
   malformed document is opened.

For the squeeze-backports distribution the problem has been fixed in
version 1:3.5.4+dfsg2-0deb7u4~bpo60+1.

For the wheezy-backports distribution the problem has been fixed in
version 1:4.3.3-2+deb8u1~bpo70+1.
Posted Mon Apr 27 03:55:40 2015