diff --git a/poky/meta/conf/distro/include/cve-extra-exclusions.inc b/poky/meta/conf/distro/include/cve-extra-exclusions.inc
index cf07acc..a6f52b5 100644
--- a/poky/meta/conf/distro/include/cve-extra-exclusions.inc
+++ b/poky/meta/conf/distro/include/cve-extra-exclusions.inc
@@ -61,10 +61,6 @@
 # There was a proposed patch https://lists.gnu.org/archive/html/qemu-devel/2021-02/msg06098.html
 # however qemu maintainers are sure the patch is incorrect and should not be applied.
 
-# flex:flex-native https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-6293
-# Upstream bug, still open: https://github.com/westes/flex/issues/414
-# Causes memory exhaustion so potential DoS but no buffer overflow, low priority
-
 # wget https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-31879
 # https://mail.gnu.org/archive/html/bug-wget/2021-02/msg00002.html
 # No response upstream as of 2021/5/12
diff --git a/poky/meta/conf/distro/include/maintainers.inc b/poky/meta/conf/distro/include/maintainers.inc
index 0e8185f..8592de5 100644
--- a/poky/meta/conf/distro/include/maintainers.inc
+++ b/poky/meta/conf/distro/include/maintainers.inc
@@ -4,7 +4,7 @@
 #
 # Please submit any patches against recipes in meta to the
 # OE-Core mail list (openembedded-core@lists.openembedded.org)
-# For recipes in meta-yocto please use the Poky list (poky@yoctoproject.org)
+# For recipes in meta-yocto please use the Poky list (poky@lists.yoctoproject.org)
 #
 # If you have problems with or questions about a particular recipe, feel
 # free to contact the maintainer directly (cc:ing the appropriate mailing list
@@ -46,7 +46,6 @@
 RECIPE_MAINTAINER:pn-argp-standalone = "Khem Raj <raj.khem@gmail.com>"
 RECIPE_MAINTAINER:pn-asciidoc = "Yi Zhao <yi.zhao@windriver.com>"
 RECIPE_MAINTAINER:pn-aspell = "Anuj Mittal <anuj.mittal@intel.com>"
-RECIPE_MAINTAINER:pn-assimp = "Anuj Mittal <anuj.mittal@intel.com>"
 RECIPE_MAINTAINER:pn-at = "Chen Qi <Qi.Chen@windriver.com>"
 RECIPE_MAINTAINER:pn-at-spi2-atk = "Tim Orling <timothy.t.orling@intel.com>"
 RECIPE_MAINTAINER:pn-at-spi2-core = "Tim Orling <timothy.t.orling@intel.com>"
diff --git a/poky/meta/conf/distro/include/rust_versions.inc b/poky/meta/conf/distro/include/rust_versions.inc
deleted file mode 100644
index a11ba22..0000000
--- a/poky/meta/conf/distro/include/rust_versions.inc
+++ /dev/null
@@ -1,13 +0,0 @@
-# include this in your distribution to easily switch between versions
-# just by changing RUST_VERSION variable
-
-RUST_VERSION ?= "1.51.0"
-
-PREFERRED_VERSION_cargo ?= "${RUST_VERSION}"
-PREFERRED_VERSION_cargo-native ?= "${RUST_VERSION}"
-PREFERRED_VERSION_libstd-rs ?= "${RUST_VERSION}"
-PREFERRED_VERSION_rust ?= "${RUST_VERSION}"
-PREFERRED_VERSION_rust-cross-${TARGET_ARCH} ?= "${RUST_VERSION}"
-PREFERRED_VERSION_rust-llvm ?= "${RUST_VERSION}"
-PREFERRED_VERSION_rust-llvm-native ?= "${RUST_VERSION}"
-PREFERRED_VERSION_rust-native ?= "${RUST_VERSION}"
diff --git a/poky/meta/conf/distro/include/tcmode-default.inc b/poky/meta/conf/distro/include/tcmode-default.inc
index 47f23f5..27e60b6 100644
--- a/poky/meta/conf/distro/include/tcmode-default.inc
+++ b/poky/meta/conf/distro/include/tcmode-default.inc
@@ -21,12 +21,13 @@
 BINUVERSION ?= "2.37%"
 GDBVERSION ?= "10.%"
 GLIBCVERSION ?= "2.34"
-LINUXLIBCVERSION ?= "5.13%"
+LINUXLIBCVERSION ?= "5.14%"
 QEMUVERSION ?= "6.0%"
 GOVERSION ?= "1.16%"
 # This can not use wildcards like 8.0.% since it is also used in mesa to denote
 # llvm version being used, so always bump it with llvm recipe version bump
 LLVMVERSION ?= "12.0.1"
+RUSTVERSION ?= "1.54.0"
 
 PREFERRED_VERSION_gcc ?= "${GCCVERSION}"
 PREFERRED_VERSION_gcc-cross-${TARGET_ARCH} ?= "${GCCVERSION}"
@@ -81,3 +82,15 @@
 PREFERRED_VERSION_llvm = "${LLVMVERSION}"
 PREFERRED_VERSION_llvm-native = "${LLVMVERSION}"
 PREFERRED_VERSION_nativesdk-llvm = "${LLVMVERSION}"
+
+# Rust toolchain preferred versions:
+
+PREFERRED_VERSION_cargo ?= "${RUSTVERSION}"
+PREFERRED_VERSION_cargo-native ?= "${RUSTVERSION}"
+PREFERRED_VERSION_libstd-rs ?= "${RUSTVERSION}"
+PREFERRED_VERSION_rust ?= "${RUSTVERSION}"
+PREFERRED_VERSION_rust-cross-${TARGET_ARCH} ?= "${RUSTVERSION}"
+PREFERRED_VERSION_rust-llvm ?= "${RUSTVERSION}"
+PREFERRED_VERSION_rust-llvm-native ?= "${RUSTVERSION}"
+PREFERRED_VERSION_rust-native ?= "${RUSTVERSION}"
+