diff --git a/.gitignore b/.gitignore
index 34d8d21..337917f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1 @@
-SOURCES/mariadb-10.5.22-downstream_modified.tar.gz
+SOURCES/mariadb-10.5.27-downstream_modified.tar.gz
diff --git a/.mariadb.metadata b/.mariadb.metadata
index 7815ec0..d95386a 100644
--- a/.mariadb.metadata
+++ b/.mariadb.metadata
@@ -1 +1 @@
-d767fc64fbf44da4e1a4174a9939356fac5fe19b SOURCES/mariadb-10.5.22-downstream_modified.tar.gz
+f791457e4617e33dc6c9a2097c05a7b20a1a7629 SOURCES/mariadb-10.5.27-downstream_modified.tar.gz
diff --git a/SOURCES/mariadb-auth_pam_tool_dir.patch b/SOURCES/mariadb-auth_pam_tool_dir.patch
index 6334812..ed63bc6 100644
--- a/SOURCES/mariadb-auth_pam_tool_dir.patch
+++ b/SOURCES/mariadb-auth_pam_tool_dir.patch
@@ -5,11 +5,11 @@ Thus "chown 0" will always fail
 Never parse 'ls' output!
 http://mywiki.wooledge.org/BashFAQ/087
 
---- mariadb-10.4.12/scripts/mysql_install_db.sh	2020-01-26 21:43:53.000000000 +0100
-+++ mariadb-10.4.12/scripts/mysql_install_db.sh_patched	2020-01-29 11:11:09.448812331 +0100
-@@ -482,13 +482,16 @@ if test -n "$user"
+--- mariadb-10.5.26-downstream_modified/scripts/mysql_install_db.sh	2024-08-03 08:57:42.000000000 +0200
++++ mariadb-10.5.26-downstream_modified/scripts/mysql_install_db.sh_patched	2024-10-19 13:50:46.157063739 +0200
+@@ -494,13 +494,16 @@ if test -n "$user"
  then
-   if test -z "$srcdir" -a "$in_rpm" -eq 0
+   if test -z "$srcdir" -a "$in_rpm" -eq 0 -a -d "$pamtooldir/auth_pam_tool_dir"
    then
 -    chown 0 "$pamtooldir/auth_pam_tool_dir/auth_pam_tool" && \
 -    chmod 04755 "$pamtooldir/auth_pam_tool_dir/auth_pam_tool"
diff --git a/SOURCES/mariadb-mtr.patch b/SOURCES/mariadb-mtr.patch
new file mode 100644
index 0000000..99db110
--- /dev/null
+++ b/SOURCES/mariadb-mtr.patch
@@ -0,0 +1,70 @@
+diff --git a/mysql-test/mariadb-test-run.pl b/mysql-test/mariadb-test-run.pl
+index 594e052a16e..6a274b2d597 100755
+--- a/mysql-test/mysql-test-run.pl
++++ b/mysql-test/mysql-test-run.pl
+@@ -1491,7 +1491,6 @@ sub command_line_setup {
+       mtr_warning ("Port base $opt_port_base rounded down to multiple of 10");
+       $opt_port_base-= $rem;
+     }
+-    $opt_build_thread= $opt_port_base / 10 - 1000;
+   }
+ 
+   # --------------------------------------------------------------------------
+@@ -1719,11 +1718,6 @@ sub command_line_setup {
+ # an environment variable can be used to control all ports. A small
+ # number is to be used, 0 - 16 or similar.
+ #
+-# Note the MASTER_MYPORT has to be set the same in all 4.x and 5.x
+-# versions of this script, else a 4.0 test run might conflict with a
+-# 5.1 test run, even if different MTR_BUILD_THREAD is used. This means
+-# all port numbers might not be used in this version of the script.
+-#
+ # Also note the limitation of ports we are allowed to hand out. This
+ # differs between operating systems and configuration, see
+ # http://www.ncftp.com/ncftpd/doc/misc/ephemeral_ports.html
+@@ -1734,10 +1728,14 @@ sub set_build_thread_ports($) {
+ 
+   if ( lc($opt_build_thread) eq 'auto' ) {
+     my $found_free = 0;
+-    $build_thread = 300;	# Start attempts from here
+-    my $build_thread_upper = $build_thread + ($opt_parallel > 1500
+-                                              ? 3000
+-                                              : 2 * $opt_parallel) + 300;
++    if ($opt_port_base eq "auto") {
++      $build_thread = 15000;
++    } else {
++      $build_thread = $opt_port_base;
++    }
++    $build_thread += ($thread - 1) * $opt_port_group_size;
++    my $build_thread_upper = $build_thread + $opt_parallel * 2;
++
+     while (! $found_free)
+     {
+       $build_thread= mtr_get_unique_id($build_thread, $build_thread_upper);
+@@ -1754,7 +1752,7 @@ sub set_build_thread_ports($) {
+   }
+   else
+   {
+-    $build_thread = $opt_build_thread + $thread - 1;
++    $build_thread = $opt_port_base + $thread - 1;
+     if (! check_ports_free($build_thread)) {
+       # Some port was not free(which one has already been printed)
+       mtr_error("Some port(s) was not free")
+@@ -1763,7 +1761,7 @@ sub set_build_thread_ports($) {
+   $ENV{MTR_BUILD_THREAD}= $build_thread;
+ 
+   # Calculate baseport
+-  $baseport= $build_thread * $opt_port_group_size + 10000;
++  $baseport= $build_thread;
+   if ( $baseport < 5001 or $baseport + $opt_port_group_size >= 32767 )
+   {
+     mtr_error("MTR_BUILD_THREAD number results in a port",
+@@ -2968,7 +2966,7 @@ sub kill_leftovers ($) {
+ sub check_ports_free ($)
+ {
+   my $bthread= shift;
+-  my $portbase = $bthread * $opt_port_group_size + 10000;
++  my $portbase = $bthread;
+   for ($portbase..$portbase+($opt_port_group_size-1)){
+     if (mtr_ping_port($_)){
+       mtr_report(" - 'localhost:$_' was not free");
diff --git a/SOURCES/rh-skipped-tests-base.list b/SOURCES/rh-skipped-tests-base.list
index 8ab112c..1e62ce4 100644
--- a/SOURCES/rh-skipped-tests-base.list
+++ b/SOURCES/rh-skipped-tests-base.list
@@ -89,3 +89,9 @@ rpl.rpl_slave_shutdown_mdev20821            :
 
 # Fails since 10.5.22
 mariabackup.aria_log_dir_path               :
+
+# Fails since 10.5.26
+mariabackup.slave_provision_nolock :
+
+# Fails on 10.5.27
+main.timezone :
diff --git a/SPECS/mariadb.spec b/SPECS/mariadb.spec
index c0269d9..a536c83 100644
--- a/SPECS/mariadb.spec
+++ b/SPECS/mariadb.spec
@@ -1,3 +1,6 @@
+# To both save infrastrucutre resources and workaround for i686 FTBFS
+ExcludeArch: %{ix86}
+
 #   This is a fix for the https://fedoraproject.org/wiki/Changes/CMake_to_do_out-of-source_builds
 #   So the beaviour will be the same also in F31 nad F32
 %undefine __cmake_in_source_build
@@ -15,7 +18,7 @@
 # The last version on which the full testsuite has been run
 # In case of further rebuilds of that version, don't require full testsuite to be run
 # run only "main" suite
-%global last_tested_version 10.5.22
+%global last_tested_version 10.5.27
 # Set to 1 to force run the testsuite even if it was already tested in current version
 %global force_run_testsuite 0
 
@@ -30,6 +33,11 @@
 # Turn that off to ensure such files don't get included in RPMs (cf bz#884755).
 %global _default_patch_flags --no-backup-if-mismatch
 
+# Temporary workaround to fix the "internal compiler error" described in https://bugzilla.redhat.com/show_bug.cgi?id=2239498
+# TODO: Remove when the issue is resolved
+%ifarch i686
+%global _lto_cflags %{nil}
+%endif
 
 
 # Mroonga engine
@@ -109,7 +117,7 @@
 %bcond_without unbundled_pcre
 %else
 %bcond_with unbundled_pcre
-%global pcre_bundled_version 10.42
+%global pcre_bundled_version 10.44
 %endif
 
 # Use main python interpretter version
@@ -147,7 +155,7 @@
 %global sameevr   %{epoch}:%{version}-%{release}
 
 Name:             mariadb
-Version:          10.5.22
+Version:          10.5.27
 Release:          1%{?with_debug:.debug}%{?dist}
 Epoch:            3
 
@@ -219,6 +227,10 @@ Patch16:          %{pkgnamepatch}-auth_pam_tool_dir.patch
 #   Patch17: Revert of an upstream commit
 Patch17:          upstream_5cc2096f93b7f130b36f8bc0fc43440db9a848e4.patch
 
+#   Patch14: make MTR port calculation reasonably predictable
+Patch14:          %{pkgnamepatch}-mtr.patch
+
+BuildRequires:    make
 BuildRequires:    cmake gcc-c++
 BuildRequires:    multilib-rpm-config
 BuildRequires:    selinux-policy-devel
@@ -731,6 +743,7 @@ rm -r storage/rocksdb/
 %patch4 -p1
 %patch7 -p1
 %patch9 -p1
+%patch14 -p1
 # The test in Patch 10 has been recently updated by upstream
 # and the test was disabled in the testuite run
 #   main.ssl_cipher     [ disabled ]  MDEV-17184 - Failures with OpenSSL 1.1.1
@@ -1182,14 +1195,6 @@ rm %{buildroot}%{_mandir}/man1/mbstream.1*
 %check
 %if %{with test}
 %if %runselftest
-# hack to let 32- and 64-bit tests run concurrently on same build machine
-export MTR_PARALLEL=1
-# Builds might happen at the same host, avoid collision
-#   The port used is calculated as 20 * MTR_BUILD_THREAD + 10000
-#   The resulting port must be between 5000 and 32767
-#   This is the same as using option "--build-thread" for the "mysql-test-run.pl"
-export MTR_BUILD_THREAD=$(( $(date +%s) % 1100 ))
-
 # The cmake build scripts don't provide any simple way to control the
 # options for mysql-test-run, so ignore the make target and just call it
 # manually.  Nonstandard options chosen are:
@@ -1210,7 +1215,7 @@ export MTR_BUILD_THREAD=$(( $(date +%s) % 1100 ))
   set -ex
   cd %{buildroot}%{_datadir}/mysql-test
 
-  export common_testsuite_arguments=" --parallel=auto --force --retry=2 --suite-timeout=900 --testcase-timeout=30 --mysqld=--binlog-format=mixed --force-restart --shutdown-timeout=60 --max-test-fail=5 "
+  export common_testsuite_arguments=" --port-base=$(( $(date +%s) % 20000 + 10000 )) --parallel=auto --force --retry=2 --suite-timeout=900 --testcase-timeout=30 --mysqld=--binlog-format=mixed --force-restart --shutdown-timeout=60 --max-test-fail=5 "
 
   # If full testsuite has already been run on this version and we don't explicitly want the full testsuite to be run
   if [[ "%{last_tested_version}" == "%{version}" ]] && [[ %{force_run_testsuite} -eq 0 ]]
@@ -1630,6 +1635,15 @@ fi
 %endif
 
 %changelog
+* Tue Dec 03 2024 Michal Schorm <mschorm@redhat.com> - 3:10.5.27-1
+- Rebase to 10.5.27
+
+* Fri Oct 18 2024 Michal Schorm <mschorm@redhat.com> - 3:10.5.26-1
+- Rebase to 10.5.26
+
+* Tue Jun 11 2024 Michal Schorm <mschorm@redhat.com> - 3:10.5.25-1
+- Rebase to 10.5.25
+
 * Sun Dec 10 2023 MSVSphere Packaging Team <packager@msvsphere-os.ru> - 3:10.5.22-1
 - Rebuilt for MSVSphere 8.8