diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index cd3109ff69..1a7617b06e 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -234,6 +234,15 @@ linux32-build:
   variables:
     BUILD_TARGET: linux32
 
+linux32_ubsan-build:
+  extends:
+    - .build-template
+    - .skip-in-fast-mode-template
+  needs:
+    - i686-pc-linux-gnu
+  variables:
+    BUILD_TARGET: linux32_ubsan
+
 linux64-build:
   extends: .build-template
   needs:
@@ -248,6 +257,15 @@ linux64_cxx20-build:
   variables:
     BUILD_TARGET: linux64_cxx20
 
+linux64_tsan-build:
+  extends:
+    - .build-template
+    - .skip-in-fast-mode-template
+  needs:
+    - x86_64-unknown-linux-gnu-debug
+  variables:
+    BUILD_TARGET: linux64_tsan
+
 linux64_nowallet-build:
   extends:
     - .build-template
@@ -286,9 +304,27 @@ linux32-test:
   variables:
     BUILD_TARGET: linux32
 
+linux32_ubsan-test:
+  extends:
+    - .test-template
+    - .skip-in-fast-mode-template
+  needs:
+    - linux32_ubsan-build
+  variables:
+    BUILD_TARGET: linux32_ubsan
+
 linux64-test:
   extends: .test-template
   needs:
     - linux64-build
   variables:
     BUILD_TARGET: linux64
+
+linux64_tsan-test:
+  extends:
+    - .test-template
+    - .skip-in-fast-mode-template
+  needs:
+    - linux64_tsan-build
+  variables:
+    BUILD_TARGET: linux64_tsan
diff --git a/ci/dash/matrix.sh b/ci/dash/matrix.sh
index ca6c8c9b36..c33658732c 100755
--- a/ci/dash/matrix.sh
+++ b/ci/dash/matrix.sh
@@ -35,6 +35,9 @@ export MAKEJOBS
 export RUN_UNITTESTS=true
 export RUN_INTEGRATIONTESTS=true
 
+# Configure sanitizers options
+export TSAN_OPTIONS="suppressions=${SRC_DIR}/test/sanitizer_suppressions/tsan"
+
 if [ "$BUILD_TARGET" = "arm-linux" ]; then
   export HOST=arm-linux-gnueabihf
   export CHECK_DOC=1
@@ -53,16 +56,27 @@ elif [ "$BUILD_TARGET" = "linux32" ]; then
   export BITCOIN_CONFIG="--enable-zmq --disable-bip70 --enable-reduce-exports --enable-crash-hooks"
   export USE_SHELL="/bin/dash"
   export PYZMQ=true
+elif [ "$BUILD_TARGET" = "linux32_ubsan" ]; then
+  export HOST=i686-pc-linux-gnu
+  export BITCOIN_CONFIG="--enable-zmq --disable-bip70 --enable-reduce-exports --enable-crash-hooks --with-sanitizers=undefined"
+  export USE_SHELL="/bin/dash"
+  export PYZMQ=true
 elif [ "$BUILD_TARGET" = "linux64" ]; then
   export HOST=x86_64-unknown-linux-gnu
   export DEP_OPTS="NO_UPNP=1 DEBUG=1"
-  export BITCOIN_CONFIG="--enable-zmq --enable-reduce-exports --enable-crash-hooks --with-sanitizers=undefined"
+  export BITCOIN_CONFIG="--enable-zmq --enable-reduce-exports --enable-crash-hooks"
+  export CPPFLAGS="-DDEBUG_LOCKORDER -DENABLE_DASH_DEBUG -DARENA_DEBUG"
+  export PYZMQ=true
+elif [ "$BUILD_TARGET" = "linux64_tsan" ]; then
+  export HOST=x86_64-unknown-linux-gnu
+  export DEP_OPTS="NO_UPNP=1 DEBUG=1"
+  export BITCOIN_CONFIG="--enable-zmq --enable-reduce-exports --enable-crash-hooks --with-sanitizers=thread"
   export CPPFLAGS="-DDEBUG_LOCKORDER -DENABLE_DASH_DEBUG -DARENA_DEBUG"
   export PYZMQ=true
 elif [ "$BUILD_TARGET" = "linux64_cxx20" ]; then
   export HOST=x86_64-unknown-linux-gnu
   export DEP_OPTS="NO_UPNP=1 DEBUG=1"
-  export BITCOIN_CONFIG="--enable-zmq --enable-reduce-exports --enable-crash-hooks --enable-c++20 --enable-suppress-external-warnings --enable-werror --with-sanitizers=undefined"
+  export BITCOIN_CONFIG="--enable-zmq --enable-reduce-exports --enable-crash-hooks --enable-c++20 --enable-suppress-external-warnings --enable-werror"
   export CPPFLAGS="-DDEBUG_LOCKORDER -DENABLE_DASH_DEBUG -DARENA_DEBUG"
   export PYZMQ=true
   export RUN_INTEGRATIONTESTS=false
diff --git a/src/coinjoin/client.cpp b/src/coinjoin/client.cpp
index b3ef3be3db..7029042229 100644
--- a/src/coinjoin/client.cpp
+++ b/src/coinjoin/client.cpp
@@ -235,10 +235,8 @@ void CCoinJoinClientSession::ProcessMessage(CNode* pfrom, const std::string& str
 }
 
 bool CCoinJoinClientManager::StartMixing() {
-    if (IsMixing()) {
-        return false;
-    }
-    return fMixing = true;
+    bool expected{false};
+    return fMixing.compare_exchange_strong(expected, true);
 }
 
 void CCoinJoinClientManager::StopMixing() {
diff --git a/src/coinjoin/client.h b/src/coinjoin/client.h
index ce795da096..7422cb543a 100644
--- a/src/coinjoin/client.h
+++ b/src/coinjoin/client.h
@@ -9,6 +9,7 @@
 #include <coinjoin/coinjoin.h>
 
 #include <utility>
+#include <atomic>
 
 class CDeterministicMN;
 using CDeterministicMNCPtr = std::shared_ptr<const CDeterministicMN>;
@@ -178,7 +179,7 @@ private:
     // TODO: or map<denom, CCoinJoinClientSession> ??
     std::deque<CCoinJoinClientSession> deqSessions GUARDED_BY(cs_deqsessions);
 
-    bool fMixing{false};
+    std::atomic<bool> fMixing{false};
 
     int nCachedLastSuccessBlock{0};
     int nMinBlocksToWait{1}; // how many blocks to wait for after one successful mixing tx in non-multisession mode
diff --git a/src/net.cpp b/src/net.cpp
index 9d9697035a..16a513443d 100644
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -3218,13 +3218,14 @@ void CConnman::Stop()
         }
 
     // clean up some globals (to help leak detection)
-    for (CNode *pnode : vNodes) {
+    std::vector<CNode*> nodes;
+    WITH_LOCK(cs_vNodes, nodes.swap(vNodes));
+    for (CNode *pnode : nodes) {
         DeleteNode(pnode);
     }
     for (CNode *pnode : vNodesDisconnected) {
         DeleteNode(pnode);
     }
-    vNodes.clear();
     mapSocketToNode.clear();
     {
         LOCK(cs_vNodes);
diff --git a/test/sanitizer_suppressions/tsan b/test/sanitizer_suppressions/tsan
index a5909ee3b0..7e8be7c705 100644
--- a/test/sanitizer_suppressions/tsan
+++ b/test/sanitizer_suppressions/tsan
@@ -1,9 +1,15 @@
 # ThreadSanitizer suppressions
 # ============================
 
+# Data races from zmq namespace
+race:zmq::*
+
 # WalletBatch (unidentified deadlock)
 deadlock:WalletBatch
 
+# deadlock false positive (see: https://github.com/dashpay/dash/pull/4563)
+deadlock:CChainState::ConnectTip
+
 # Intentional deadlock in tests
 deadlock:sync_tests::potential_deadlock_detected