diff --git a/.github/workflows/test-sync.yml b/.github/workflows/test-sync.yml
index 097e4db..e55686e 100644
--- a/.github/workflows/test-sync.yml
+++ b/.github/workflows/test-sync.yml
@@ -124,6 +124,49 @@ jobs:
           build/*.log
           build/data/
 
+  sync-test-ubuntu-ubsan:
+
+    timeout-minutes: 30
+    runs-on: ubuntu-22.04
+
+    steps:
+    - name: Install dependencies
+      run: |
+        sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
+        sudo apt update
+        sudo apt install -y git build-essential cmake libuv1-dev libzmq3-dev libsodium-dev libpgm-dev libnorm-dev libgss-dev libcurl4-openssl-dev libidn2-0-dev gcc-12 g++-12
+
+    - name: Checkout repository
+      uses: actions/checkout@v3
+      with:
+        submodules: true
+
+    - name: Build p2pool
+      run: |
+        mkdir build
+        cd build
+        cmake .. -DDEV_TEST_SYNC=ON -DDEV_WITH_UBSAN=ON -DCMAKE_C_COMPILER=gcc-12 -DCMAKE_CXX_COMPILER=g++-12
+        make -j$(nproc)
+
+    - name: Run p2pool
+      timeout-minutes: 20
+      run: |
+        cd build
+        mkdir data
+        python ../tests/src/stratum_dummy.py stratum_dummy1.log &
+        python ../tests/src/stratum_dummy.py stratum_dummy2.log &
+        python ../tests/src/stratum_dummy.py stratum_dummy3.log &
+        UBSAN_OPTIONS="suppressions=../tests/src/ubsan_sup.txt halt_on_error=1" ./p2pool --host xmrnode.facspro.net --rpc-port 18089 --zmq-port 18084 --wallet 44MnN1f3Eto8DZYUWuE5XZNUtE3vcRzt2j6PzqWpPau34e6Cf4fAxt6X2MBmrm6F9YMEiMNjN6W4Shn4pLcfNAja621jwyg --data-api data --local-api --loglevel 6
+        grep 'Synchronization finished successfully' p2pool.log
+
+    - name: Archive p2pool.log
+      uses: actions/upload-artifact@v3
+      with:
+        name: p2pool_ubuntu_data_ubsan
+        path: |
+          build/*.log
+          build/data/
+
   sync-test-macos:
 
     timeout-minutes: 30
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 71b9f27..a293ca3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,6 +10,7 @@ option(WITH_UPNP "Include UPnP support. If this is turned off, p2pool will not b
 option(DEV_TEST_SYNC "[Developer only] Sync test, stop p2pool after sync is complete" OFF)
 option(DEV_WITH_TSAN "[Developer only] Compile with thread sanitizer" OFF)
 option(DEV_WITH_MSAN "[Developer only] Compile with memory sanitizer" OFF)
+option(DEV_WITH_UBSAN "[Developer only] Compile with undefined behavior sanitizer" OFF)
 
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake")
 
@@ -41,6 +42,10 @@ if (DEV_WITH_MSAN)
 	add_definitions(-DDEV_WITH_MSAN)
 endif()
 
+if (DEV_WITH_UBSAN)
+	add_definitions(-DDEV_WITH_UBSAN)
+endif()
+
 include(cmake/flags.cmake)
 
 set(HEADERS
@@ -288,7 +293,7 @@ endif()
 add_executable(${CMAKE_PROJECT_NAME} ${HEADERS} ${SOURCES})
 
 if (STATIC_BINARY OR STATIC_LIBS)
-	if (NOT (DEV_WITH_TSAN OR DEV_WITH_MSAN))
+	if (NOT (DEV_WITH_TSAN OR DEV_WITH_MSAN OR DEV_WITH_UBSAN))
 		if (WIN32)
 			add_custom_command(TARGET ${CMAKE_PROJECT_NAME} POST_BUILD COMMAND ${CMAKE_STRIP} "${CMAKE_PROJECT_NAME}.exe")
 		else()
diff --git a/cmake/flags.cmake b/cmake/flags.cmake
index 4d7607d..44134db 100644
--- a/cmake/flags.cmake
+++ b/cmake/flags.cmake
@@ -12,9 +12,13 @@ if (CMAKE_CXX_COMPILER_ID MATCHES GNU)
 		set(GENERAL_FLAGS "${GENERAL_FLAGS} -fno-omit-frame-pointer -fsanitize=thread")
 	endif()
 
+	if (DEV_WITH_UBSAN)
+		set(GENERAL_FLAGS "${GENERAL_FLAGS} -fno-omit-frame-pointer -fsanitize=undefined")
+	endif()
+
 	set(WARNING_FLAGS "-Wall -Wextra -Wcast-align -Wcast-qual -Wlogical-op -Wstrict-overflow=2 -Wundef -Wformat=2 -Wpointer-arith -Werror")
 
-	if (DEV_WITH_TSAN)
+	if (DEV_WITH_TSAN OR DEV_WITH_UBSAN)
 		set(OPTIMIZATION_FLAGS "-O2 -g")
 	else()
 		set(OPTIMIZATION_FLAGS "-Ofast -s")
diff --git a/tests/src/ubsan_sup.txt b/tests/src/ubsan_sup.txt
new file mode 100644
index 0000000..e3e6900
--- /dev/null
+++ b/tests/src/ubsan_sup.txt
@@ -0,0 +1 @@
+shift-base:crypto-ops.c