diff --git a/lib/Kconfig.ubsan b/lib/Kconfig.ubsan
index 39494af..bc6e651 100644
--- a/lib/Kconfig.ubsan
+++ b/lib/Kconfig.ubsan
@@ -1,6 +1,9 @@
 config ARCH_HAS_UBSAN_SANITIZE_ALL
 	bool
 
+config ARCH_WANTS_UBSAN_NO_NULL
+	def_bool n
+
 config UBSAN
 	bool "Undefined behaviour sanity checker"
 	help
@@ -34,3 +37,11 @@
 	  This option enables detection of unaligned memory accesses.
 	  Enabling this option on architectures that support unaligned
 	  accesses may produce a lot of false positives.
+
+config UBSAN_NULL
+	bool "Enable checking of null pointers"
+	depends on UBSAN
+	default y if !ARCH_WANTS_UBSAN_NO_NULL
+	help
+	  This option enables detection of memory accesses via a
+	  null pointer.