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+.. _mozilla_projects_nss_nss_3_51_1_release_notes:
+
+NSS 3.51.1 release notes
+========================
+
+`Introduction <#introduction>`__
+--------------------------------
+
+.. container::
+
+   The NSS team has released Network Security Services (NSS) 3.51.1 on **3 April 2020**. This is  a
+   minor release focusing on functional bug fixes and low-risk patches only.
+
+.. _distribution_information:
+
+`Distribution Information <#distribution_information>`__
+--------------------------------------------------------
+
+.. container::
+
+   The HG tag is NSS_3_51_1_RTM. NSS 3.51.1 requires NSPR 4.25 or newer.
+
+   NSS 3.51.1 source distributions are available on ftp.mozilla.org for secure HTTPS download:
+
+   -  Source tarballs:
+      https://ftp.mozilla.org/pub/mozilla.org/security/nss/releases/NSS_3_51_1_RTM/src/
+
+   Other releases are available :ref:`mozilla_projects_nss_nss_releases`.
+
+.. _notable_changes_in_nss_3.51.1:
+
+`Notable Changes in NSS 3.51.1 <#notable_changes_in_nss_3.51.1>`__
+------------------------------------------------------------------
+
+.. container::
+
+   -  `Bug 1617968 <https://bugzilla.mozilla.org/show_bug.cgi?id=1617968>`__ - Update Delegated
+      Credentials implementation to draft-07.
+
+.. _bugs_fixed_in_nss_3.51.1:
+
+`Bugs fixed in NSS 3.51.1 <#bugs_fixed_in_nss_3.51.1>`__
+--------------------------------------------------------
+
+.. container::
+
+   -  `Bug 1619102 <https://bugzilla.mozilla.org/show_bug.cgi?id=1619102>`__ - Add workaround option
+      to include both DTLS and TLS versions in DTLS supported_versions.
+   -  `Bug 1619056 <https://bugzilla.mozilla.org/show_bug.cgi?id=1619056>`__ - Update README: TLS
+      1.3 is not experimental anymore.
+   -  `Bug 1618739 <https://bugzilla.mozilla.org/show_bug.cgi?id=1618739>`__ - Don't assert fuzzer
+      behavior in SSL_ParseSessionTicket.
+   -  `Bug 1618915 <https://bugzilla.mozilla.org/show_bug.cgi?id=1618915>`__ - Fix UBSAN issue in
+      ssl_ParseSessionTicket.
+   -  `Bug 1608245 <https://bugzilla.mozilla.org/show_bug.cgi?id=1608245>`__ - Consistently handle
+      NULL slot/session.
+   -  `Bug 1608250 <https://bugzilla.mozilla.org/show_bug.cgi?id=1608250>`__ - broken fipstest
+      handling of KI_len.
+   -  `Bug 1617968 <https://bugzilla.mozilla.org/show_bug.cgi?id=1617968>`__ - Update Delegated
+      Credentials implementation to draft-07.
+
+`Compatibility <#compatibility>`__
+----------------------------------
+
+.. container::
+
+   NSS 3.51.1 shared libraries are backward compatible with all older NSS 3.x shared libraries. A
+   program linked with older NSS 3.x shared libraries will work with NSS 3.51.1 shared libraries
+   without recompiling or relinking. Furthermore, applications that restrict their use of NSS APIs
+   to the functions listed in NSS Public Functions will remain compatible with future versions of
+   the NSS shared libraries.
+
+`Feedback <#feedback>`__
+------------------------
+
+.. container::
+
+   Bugs discovered should be reported by filing a bug report with
+   `bugzilla.mozilla.org <https://bugzilla.mozilla.org/enter_bug.cgi?product=NSS>`__ (product NSS).
+\ No newline at end of file