2017/7/21付けでYocto2.3.1がリリースされています。

リリース版のURLは以下となります
http://downloads.yoctoproject.org/releases/yocto/yocto-2.3.1/poky-pyro-1...

2.3リリース後に発見されたセキュリティFIXと、ドキュメントの
更新が主な変更となります。

更新内容は、以下となります。

---------------
Security Fixes
---------------
binutils: fix CVE-2017-7210
binutils: fix CVE-2017-7209 in readelf
libxslt: Fix CVE-2017-5029
ghostscript: CVE-2016-7977, CVE-2016-7978, CVE-2016-7979, CVE-2017-9216
ghostscript: CVE-2016-8602, CVE-2017-7975
binutils: fix CVE-2017-6969 in readelf
rpcbind: Fix CVE-2017-8779
binutils: Fix CVE-2017-8392
cve-check.bbclass: make warning contain CVE IDs
cve-check-tool: backport a patch to make CVE checking work
bash: CVE-2016-0634

---------------
Fixes
---------------
Revert "bitbake.conf: Add sdl-config to HOSTTOOLS if using host SDL"
bitbake: siggen: Make calc_taskhash match get_taskhash for file checksums
bitbake: fetch: fix handling of files with incorrect checksums from a premirror
ref-manual: uClibc Replaced by musl from Yocto 2.2
dev-manual: Fixed a DocBook issue with formatting "bug-id"
sdk-manual: Updated the note for building SDK Installer
ref-manual: Updated LAYERRECOMMENDS variable
documentation: Prepared 2.3.1 release variables and dates
ref-manual: Updated PACKAGECONFIG_CONFARGS variable
ref-manual: Added warning to native.bbclass for naming convention
ref-manual: Updated PACKAGECONFIG_CONFARGS variable description
yocto-project-qs: Updated the YP Development Flow figure
dev-manual, sdk-manual: Fixed link to Eclipse section
dev-manual: Fixed broken link into the setting up Eclipse section
ref-manual: Added LAYERRECOMMENDS variable description
ref-manual: Updated LAYERDEPENDS variable description
ref-manual: Updated image-live.bbclass description
ref-manual: Enhanced the glossary description for INHERIT
ref-manual: Fixed typo for "Installation"
package_ipk: Clean up Source entry in ipk packages
mkelfimage: Fix broken patch when building native
automake: Backport perl 5.22 fix
bitbake.conf: Add sdl-config to HOSTTOOLS if using host SDL
piglit: add patches for unbuildable surfaceless Mesa test
piglit: add patch for lack of gbm_bo_map
piglit: depend on virtual/egl
image-vm: Avoid use of fold, tac and paste commands for DISK_SIGNATURE
kernel: predefine KBUILD_BUILD_USER and KBUILD_BUILD_HOST
oeqa/selftest: lock down Meson git revision for reliability
scriptutils: fix fetch_uri() to work with RSS
cryptodev-linux: update SRC_URI
staging: Allow BB_LIMITEDDEPS to avoid BB_TASKDEPDATA
sstate: Ensure native/cross recipes have relocation of HOSTTOOLS_DIR
python.inc: Fix python2/3 hosttools path references
rpm: Ensure macros file doesn't reference HOSTTOOLS
GNU_MIRROR: switch from ftp to https
DEBIAN_MIRROR: switch from ftp to http
useradd: remove preinst script referring to recipe sysroot
useradd.bbclass: Handle COMPONENTS_DIR when restoring state
bitbake.conf: Add COMPONENTS_DIR for ${STAGING_DIR}-components
yocto-project-qs: Updated output for git clone of meta-intel.
yocto-project-qs: Updated git clone output for pyro poky.
ref-manual: Removed section on checking for build-time dependencies.
ref-manual, dev-manual: replaced "depexp" with "taskexp"
ref-manual: Removed text surrounding BB_SETSCENE_VERIFY_FUNCTION* vars
dev-manual: Cleaned up "Gdbserver" term
dev-manual: Updated a few occurrences of "dnf" to "DNF"
dev-manual: Changed "Dnf" to "DNF" for consistency
ref-manual: Added links for variables
ref-manual: Added 4 DISTRO_FEATURES* variable descriptions.
ref-manual, dev-manual: Completed first draft of 2.3 migration section.
ref-manual: Applied 2.3 Migration review comments.
ref-manual: Added new glossary entries for HOSTTOOLS* variables.