diff --git a/kernel/stack.c b/kernel/stack.c
index 822abfca36..adebb2d68e 100644
--- a/kernel/stack.c
+++ b/kernel/stack.c
@@ -8,6 +8,7 @@
  * @brief fixed-size stack object
  */
 
+#include <zephyr/sys/math_extras.h>
 #include <zephyr/kernel.h>
 #include <zephyr/kernel_structs.h>
 
@@ -64,8 +65,12 @@ int32_t z_impl_k_stack_alloc_init(struct k_stack *stack, uint32_t num_entries)
 static inline int32_t z_vrfy_k_stack_alloc_init(struct k_stack *stack,
 					      uint32_t num_entries)
 {
+	size_t total_size;
+
 	K_OOPS(K_SYSCALL_OBJ_NEVER_INIT(stack, K_OBJ_STACK));
 	K_OOPS(K_SYSCALL_VERIFY(num_entries > 0));
+	K_OOPS(K_SYSCALL_VERIFY(!size_mul_overflow(num_entries, sizeof(stack_data_t),
+					&total_size)));
 	return z_impl_k_stack_alloc_init(stack, num_entries);
 }
 #include <syscalls/k_stack_alloc_init_mrsh.c>