diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 6674ccdd38c..4eb283d4959 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -475,6 +475,11 @@ if(WITH_CRIMSON)
   set(Seastar_API_LEVEL "6" CACHE STRING "" FORCE)
   set(Seastar_IO_URING ${HAVE_LIBURING} CACHE BOOL "" FORCE)
   set(Seastar_DEPRECATED_OSTREAM_FORMATTERS OFF CACHE BOOL "" FORCE)
+  if(WITH_ASAN)
+    set(Seastar_SANITIZE "ON" CACHE STRING "" FORCE)
+  else()
+    set(Seastar_SANITIZE "OFF" CACHE STRING "" FORCE)
+  endif()
   if(Seastar_DPDK)
     find_package(dpdk QUIET)
     if(NOT DPDK_FOUND)