Security Officer-supported branches update



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Hello Everyone,

The branches supported by the FreeBSD Security Officer have been
updated to reflect recent EoL (end-of-life) events. The new list is
below and at <URL: http://security.freebsd.org/ >. FreeBSD 5.3 and
FreeBSD 5.4 have `expired' and are no longer supported effective
November 1, 2006.

The end-of-life date for FreeBSD 6.0 has been delayed by two months
in order to allow time for users to upgrade after FreeBSD 6.2 is
released. As a result, FreeBSD 6.0 and FreeBSD 4.11 will both reach
their respective EoLs and cease to be supported at the end of January
2007.

[Excerpt from http://www.freebsd.org/security/ follows]

FreeBSD Security Advisories

The FreeBSD Security Officer provides security advisories for
several branches of FreeBSD development. These are the -STABLE
Branches and the Security Branches. (Advisories are not issued for
the -CURRENT Branch.)

* There is usually only a single -STABLE branch, although during
the transition from one major development line to another
(such as from FreeBSD 5.x to 6.x), there is a time span in
which there are two -STABLE branches. The -STABLE branch tags
have names like RELENG_6. The corresponding builds have names
like FreeBSD 6.1-STABLE.

* Each FreeBSD Release has an associated Security Branch. The
Security Branch tags have names like RELENG_6_1. The
corresponding builds have names like FreeBSD 6.1-RELEASE-p1.

Isses affecting the FreeBSD Ports Collection are covered in the
FreeBSD VuXML document.

Each branch is supported by the Security Officer for a limited
time only, and is designated as one of `Early adopter', `Normal',
or `Extended'. The designation is used as a guideline for
determining the lifetime of the branch as follows.

Early adopter
Releases which are published from the -CURRENT branch will be
supported by the Security Officer for a minimum of 6 months
after the release.

Normal
Releases which are published from a -STABLE branch will be
supported by the Security Officer for a minimum of 12 months
after the release.

Extended
Selected releases will be supported by the Security Officer
for a minimum of 24 months after the release.

The current designation and estimated lifetimes of the currently
supported branches are given below. The Estimated EoL (end-of-life)
column gives the earliest date on which that branch is likely to be
dropped. Please note that these dates may be extended into the
future, but only extenuating circumstances would lead to a branch's
support being dropped earlier than the date listed.

+--------------------------------------------------------------------+
| Branch | Release | Type | Release date | Estimated EoL |
|-----------+------------+--------+----------------+-----------------|
|RELENG_4 |n/a |n/a |n/a |January 31, 2007 |
|-----------+------------+--------+----------------+-----------------|
|RELENG_4_11|4.11-RELEASE|Extended|January 25, 2005|January 31, 2007 |
|-----------+------------+--------+----------------+-----------------|
|RELENG_5 |n/a |n/a |n/a |May 31, 2008 |
|-----------+------------+--------+----------------+-----------------|
|RELENG_5_5 |5.5-RELEASE |Extended|May 25, 2006 |May 31, 2008 |
|-----------+------------+--------+----------------+-----------------|
|RELENG_6 |n/a |n/a |n/a |last release + 2y|
|-----------+------------+--------+----------------+-----------------|
|RELENG_6_0 |6.0-RELEASE |Normal |November 4, 2005|January 31, 2007 |
|-----------+------------+--------+----------------+-----------------|
|RELENG_6_1 |6.1-RELEASE |Extended|May 9, 2006 |May 31, 2008 |
+--------------------------------------------------------------------+

[End excerpt]

Colin Percival
FreeBSD Security Officer
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