diff --git a/.github/workflows/push.yml b/.github/workflows/push.yml
index 65cdf72f3caf3..4c79365a14e31 100644
--- a/.github/workflows/push.yml
+++ b/.github/workflows/push.yml
@@ -40,8 +40,6 @@ jobs:
       matrix:
         include:
           - debug: true
-            zts: false
-          - debug: false
             zts: true
     name: "LINUX_X64_${{ matrix.debug && 'DEBUG' || 'RELEASE' }}_${{ matrix.zts && 'ZTS' || 'NTS' }}"
     runs-on: ubuntu-22.04
@@ -68,6 +66,9 @@ jobs:
           configurationParameters: >-
             --${{ matrix.debug && 'enable' || 'disable' }}-debug
             --${{ matrix.zts && 'enable' || 'disable' }}-zts
+            --enable-address-sanitizer
+            --enable-undefined-sanitizer
+            CFLAGS="-DZEND_TRACK_ARENA_ALLOC"
       - name: make
         run: make -j$(/usr/bin/nproc) >/dev/null
       - name: make install
@@ -78,6 +79,7 @@ jobs:
         uses: ./.github/actions/test-linux
         with:
           testArtifacts: ${{ matrix.debug && 'DEBUG' || 'RELEASE' }}_${{ matrix.zts && 'ZTS' || 'NTS' }}
+          runTestsParameters: --asan
       - name: Test Tracing JIT
         uses: ./.github/actions/test-linux
         with:
@@ -86,6 +88,7 @@ jobs:
             -d zend_extension=opcache.so
             -d opcache.enable_cli=1
             -d opcache.jit_buffer_size=16M
+            --asan
       - name: Verify generated files are up to date
         uses: ./.github/actions/verify-generated-files
   LINUX_X32:
diff --git a/ext/enchant/tests/dict_quick_check.phpt b/ext/enchant/tests/dict_quick_check.phpt
index 3cc45079f245a..b14a009af4cf4 100644
--- a/ext/enchant/tests/dict_quick_check.phpt
+++ b/ext/enchant/tests/dict_quick_check.phpt
@@ -6,7 +6,7 @@ marcosptf - <marcosptf@yahoo.com.br>
 enchant
 --SKIPIF--
 <?php
-if (getenv('SKIP_ASAN')) die('skip Known libenchant memory leak');
+if (getenv('SKIP_ASAN')) die('xleak Known libenchant memory leak');
 if (!is_object(enchant_broker_init())) {die("skip, resource dont load\n");}
 if (!is_array(enchant_broker_list_dicts(enchant_broker_init()))) {die("skip, no dictionary installed on this machine! \n");}
 
diff --git a/ext/ffi/tests/bug79576.phpt b/ext/ffi/tests/bug79576.phpt
index 3315b40c93fb6..af30217186407 100644
--- a/ext/ffi/tests/bug79576.phpt
+++ b/ext/ffi/tests/bug79576.phpt
@@ -4,7 +4,7 @@ Bug #79576 ("TYPE *" shows unhelpful message when type is not defined)
 ffi
 --SKIPIF--
 <?php
-if (PHP_DEBUG || getenv('SKIP_ASAN')) echo "xfail: FFI cleanup after parser error is nor implemented";
+if (PHP_DEBUG || getenv('SKIP_ASAN')) echo "xleak FFI cleanup after parser error is nor implemented";
 ?>
 --FILE--
 <?php
diff --git a/ext/imap/tests/imap_getsubscribed_basic.phpt b/ext/imap/tests/imap_getsubscribed_basic.phpt
index 2c1e6a941ebd8..ecae731358f62 100644
--- a/ext/imap/tests/imap_getsubscribed_basic.phpt
+++ b/ext/imap/tests/imap_getsubscribed_basic.phpt
@@ -7,7 +7,7 @@ imap
 --SKIPIF--
 <?php
 require_once(__DIR__.'/setup/skipif.inc');
-if (getenv("SKIP_ASAN")) die("skip asan chokes on this: 'LeakSanitizer does not work under ptrace (strace, gdb, etc)'");
+if (getenv("SKIP_ASAN")) die("xleak asan chokes on this: 'LeakSanitizer does not work under ptrace (strace, gdb, etc)'");
 ?>
 --CONFLICTS--
 defaultmailbox
diff --git a/ext/imap/tests/imap_lsub_basic.phpt b/ext/imap/tests/imap_lsub_basic.phpt
index e88aa6a8de4b8..bff521624e700 100644
--- a/ext/imap/tests/imap_lsub_basic.phpt
+++ b/ext/imap/tests/imap_lsub_basic.phpt
@@ -7,7 +7,7 @@ imap
 --SKIPIF--
 <?php
 require_once(__DIR__.'/setup/skipif.inc');
-if (getenv("SKIP_ASAN")) die("skip leak sanitizer crashes");
+if (getenv("SKIP_ASAN")) die("xleak leak sanitizer crashes");
 ?>
 --CONFLICTS--
 defaultmailbox
diff --git a/ext/imap/tests/imap_open_error.phpt b/ext/imap/tests/imap_open_error.phpt
index 02ba0006e8c44..18f0f2ef0fa2d 100644
--- a/ext/imap/tests/imap_open_error.phpt
+++ b/ext/imap/tests/imap_open_error.phpt
@@ -8,7 +8,7 @@ imap
 --SKIPIF--
 <?php
 require_once(__DIR__.'/setup/skipif.inc');
-if (getenv("SKIP_ASAN")) die("skip leak sanitizer crashes");
+if (getenv("SKIP_ASAN")) die("xleak leak sanitizer crashes");
 ?>
 --FILE--
 <?php
diff --git a/ext/oci8/tests/privileged_connect1.phpt b/ext/oci8/tests/privileged_connect1.phpt
index 09c5f047d1672..037c61e601ce5 100644
--- a/ext/oci8/tests/privileged_connect1.phpt
+++ b/ext/oci8/tests/privileged_connect1.phpt
@@ -4,7 +4,7 @@ privileged connect tests
 oci8
 --SKIPIF--
 <?php 
-if (getenv('SKIP_ASAN')) die('skip leaks memory under asan');
+if (getenv('SKIP_ASAN')) die('xleak leaks memory under asan');
 ?>
 --INI--
 oci8.privileged_connect=1
diff --git a/ext/opcache/tests/gh9259_003.phpt b/ext/opcache/tests/gh9259_003.phpt
index 1666f93257ecf..04dc46b1906bb 100644
--- a/ext/opcache/tests/gh9259_003.phpt
+++ b/ext/opcache/tests/gh9259_003.phpt
@@ -4,7 +4,7 @@ Bug GH-9259 003 (Setting opcache.interned_strings_buffer to a very high value le
 opcache
 --SKIPIF--
 <?php
-if (getenv('SKIP_ASAN')) die('xfail Leaks memory with ASAN');
+if (getenv('SKIP_ASAN')) die('xleak Leaks memory with ASAN');
 ?>
 --INI--
 opcache.interned_strings_buffer=500
diff --git a/ext/opcache/tests/log_verbosity_bug.phpt b/ext/opcache/tests/log_verbosity_bug.phpt
index 6b7e04e2b8c87..8467e4b3b8e67 100644
--- a/ext/opcache/tests/log_verbosity_bug.phpt
+++ b/ext/opcache/tests/log_verbosity_bug.phpt
@@ -14,7 +14,7 @@ opcache.log_verbosity_level=-1
 opcache
 --SKIPIF--
 <?php
-if (getenv('SKIP_ASAN')) die('xfail Startup failure leak');
+if (getenv('SKIP_ASAN')) die('xleak Startup failure leak');
 ?>
 --FILE--
 <?php
diff --git a/ext/opcache/tests/preload_006.phpt b/ext/opcache/tests/preload_006.phpt
index d97a492c68466..c72532f41c7b8 100644
--- a/ext/opcache/tests/preload_006.phpt
+++ b/ext/opcache/tests/preload_006.phpt
@@ -10,7 +10,7 @@ opcache
 --SKIPIF--
 <?php
 if (PHP_OS_FAMILY == 'Windows') die('skip Preloading is not supported on Windows');
-if (getenv('SKIP_ASAN')) die('xfail Startup failure leak');
+if (getenv('SKIP_ASAN')) die('xleak Startup failure leak');
 ?>
 --FILE--
 <?php
diff --git a/ext/opcache/tests/preload_parse_error.phpt b/ext/opcache/tests/preload_parse_error.phpt
index c59aacbcce5f3..5eb8d877f0445 100644
--- a/ext/opcache/tests/preload_parse_error.phpt
+++ b/ext/opcache/tests/preload_parse_error.phpt
@@ -10,7 +10,7 @@ opcache
 --SKIPIF--
 <?php
 if (PHP_OS_FAMILY == 'Windows') die('skip Preloading is not supported on Windows');
-if (getenv('SKIP_ASAN')) die('xfail Startup failure leak');
+if (getenv('SKIP_ASAN')) die('xleak Startup failure leak');
 ?>
 --FILE--
 OK
diff --git a/ext/pdo_oci/tests/pecl_bug_6364.phpt b/ext/pdo_oci/tests/pecl_bug_6364.phpt
index 9a97496fd0fb2..afd3685a5b613 100644
--- a/ext/pdo_oci/tests/pecl_bug_6364.phpt
+++ b/ext/pdo_oci/tests/pecl_bug_6364.phpt
@@ -5,7 +5,7 @@ pdo
 pdo_oci
 --SKIPIF--
 <?php
-if (getenv('SKIP_ASAN')) die('skip leaks memory under asan');
+if (getenv('SKIP_ASAN')) die('xleak leaks memory under asan');
 require(__DIR__.'/../../pdo/tests/pdo_test.inc');
 PDOTest::skip();
 ?>
diff --git a/ext/posix/tests/posix_getgrgid_error.phpt b/ext/posix/tests/posix_getgrgid_error.phpt
index 952a3894ef8c3..f0d49a7860f8a 100644
--- a/ext/posix/tests/posix_getgrgid_error.phpt
+++ b/ext/posix/tests/posix_getgrgid_error.phpt
@@ -4,7 +4,7 @@ Test posix_getgrgid() function : error conditions
 posix
 --SKIPIF--
 <?php
-if (getenv('SKIP_ASAN')) die('skip LSan crashes when firebird is loaded');
+if (getenv('SKIP_ASAN')) die('xleak LSan crashes when firebird is loaded');
 ?>
 --FILE--
 <?php
diff --git a/ext/posix/tests/posix_getpwuid_error.phpt b/ext/posix/tests/posix_getpwuid_error.phpt
index b7bae3039262f..4f2f0ac1e2464 100644
--- a/ext/posix/tests/posix_getpwuid_error.phpt
+++ b/ext/posix/tests/posix_getpwuid_error.phpt
@@ -4,7 +4,7 @@ Test posix_getpwuid() function : error conditions
 posix
 --SKIPIF--
 <?php
-if (getenv('SKIP_ASAN')) die('skip LSan crashes when firebird is loaded');
+if (getenv('SKIP_ASAN')) die('xleak LSan crashes when firebird is loaded');
 ?>
 --FILE--
 <?php
diff --git a/ext/pspell/tests/005.phpt b/ext/pspell/tests/005.phpt
index ac8ee78e95d51..ab577dbe696f7 100644
--- a/ext/pspell/tests/005.phpt
+++ b/ext/pspell/tests/005.phpt
@@ -5,7 +5,7 @@ pspell
 --SKIPIF--
 <?php
 if (!@pspell_new('en')) die('skip English dictionary is not available');
-if (getenv('SKIP_ASAN')) die('skip pspell leaks memory for invalid dicationaries');
+if (getenv('SKIP_ASAN')) die('xleak pspell leaks memory for invalid dicationaries');
 ?>
 --FILE--
 <?php
diff --git a/ext/standard/tests/general_functions/get_cfg_var_variation8.phpt b/ext/standard/tests/general_functions/get_cfg_var_variation8.phpt
index 6b975cd4963f8..ddfb3b388724f 100644
--- a/ext/standard/tests/general_functions/get_cfg_var_variation8.phpt
+++ b/ext/standard/tests/general_functions/get_cfg_var_variation8.phpt
@@ -6,7 +6,7 @@ Francesco Fullone ff@ideato.it
 --INI--
 magic_quotes_gpc=1
 --SKIPIF--
-<?php if (getenv('SKIP_ASAN')) die('xfail Startup failure leak'); ?>
+<?php if (getenv('SKIP_ASAN')) die('xleak Startup failure leak'); ?>
 --FILE--
 <?php
 echo "*** Test by calling method or function with deprecated option ***\n";
diff --git a/ext/standard/tests/streams/bug46024.phpt b/ext/standard/tests/streams/bug46024.phpt
index 79078890ce1a1..2785c979e006d 100644
--- a/ext/standard/tests/streams/bug46024.phpt
+++ b/ext/standard/tests/streams/bug46024.phpt
@@ -5,7 +5,7 @@ Bug #46024 stream_select() doesn't return the correct number
 if (!getenv('TEST_PHP_EXECUTABLE_ESCAPED')) die("skip TEST_PHP_EXECUTABLE_ESCAPED not defined");
 // Terminating the process may cause a bailout while writing out the phpinfo,
 // which may leak a temporary hash table. This does not seems worth fixing.
-if (getenv('SKIP_ASAN')) die("skip Test may leak");
+if (getenv('SKIP_ASAN')) die("xleak Test may leak");
 ?>
 --FILE--
 <?php
diff --git a/run-tests.php b/run-tests.php
index 0b7d88877db0c..01e3c287a430b 100755
--- a/run-tests.php
+++ b/run-tests.php
@@ -2207,6 +2207,9 @@ function run_test(string $php, $file, array $env): string
         } elseif (!strncasecmp('xfail', $output, 5)) {
             // Pretend we have an XFAIL section
             $test->setSection('XFAIL', ltrim(substr($output, 5)));
+        } elseif (!strncasecmp('xleak', $output, 5)) {
+            // Pretend we have an XLEAK section
+            $test->setSection('XLEAK', ltrim(substr($output, 5)));
         } elseif ($output !== '') {
             show_result("BORK", $output, $tested_file, 'reason: invalid output from SKIPIF', $temp_filenames);
             $PHP_FAILED_TESTS['BORKED'][] = [
@@ -2461,6 +2464,10 @@ function run_test(string $php, $file, array $env): string
         $cmd = $valgrind->wrapCommand($cmd, $memcheck_filename, strpos($test_file, "pcre") !== false);
     }
 
+    if ($test->hasSection('XLEAK') && isset($env['SKIP_ASAN'])) {
+        $env['LSAN_OPTIONS'] = 'detect_leaks=0';
+    }
+
     if ($DETAILED) {
         echo "
 CONTENT_LENGTH  = " . $env['CONTENT_LENGTH'] . "
@@ -2657,7 +2664,8 @@ function run_test(string $php, $file, array $env): string
             if ($test->hasSection('XFAIL')) {
                 $warn = true;
                 $info = " (warn: XFAIL section but test passes)";
-            } elseif ($test->hasSection('XLEAK')) {
+            } elseif ($test->hasSection('XLEAK') && !isset($env['SKIP_ASAN'])) {
+                // XLEAK with ASAN completely disables LSAN so the test is expected to pass
                 $warn = true;
                 $info = " (warn: XLEAK section but test passes)";
             } else {
@@ -2694,7 +2702,8 @@ function run_test(string $php, $file, array $env): string
         if ($test->hasSection('XFAIL')) {
             $restype[] = 'XFAIL';
             $info = '  XFAIL REASON: ' . rtrim($test->getSection('XFAIL'));
-        } elseif ($test->hasSection('XLEAK')) {
+        } elseif ($test->hasSection('XLEAK') && !isset($env['SKIP_ASAN'])) {
+            // XLEAK with ASAN completely disables LSAN so the test is expected to pass
             $restype[] = 'XLEAK';
             $info = '  XLEAK REASON: ' . rtrim($test->getSection('XLEAK'));
         } else {