diff --git a/include/kernel/syscall.h b/include/kernel/syscall.h
index 4c059b2..edd16b9 100644
--- a/include/kernel/syscall.h
+++ b/include/kernel/syscall.h
@@ -121,6 +121,9 @@ extern kern_status_t sys_address_space_release(
 
 extern kern_status_t sys_kern_log(const char *s);
 extern kern_status_t sys_kern_handle_close(kern_handle_t handle);
+extern kern_status_t sys_kern_handle_duplicate(
+	kern_handle_t handle,
+	kern_handle_t *out);
 extern kern_status_t sys_kern_config_get(
 	kern_config_key_t key,
 	void *ptr,
diff --git a/libmango/arch/x86_64/syscall.S b/libmango/arch/x86_64/syscall.S
index d9fd17c..ed728fb 100644
--- a/libmango/arch/x86_64/syscall.S
+++ b/libmango/arch/x86_64/syscall.S
@@ -77,6 +77,7 @@ SYSCALL_GATE address_space_release SYS_ADDRESS_SPACE_RELEASE 3
 
 SYSCALL_GATE kern_log SYS_KERN_LOG 1
 SYSCALL_GATE kern_handle_close SYS_KERN_HANDLE_CLOSE 1
+SYSCALL_GATE kern_handle_duplicate SYS_KERN_HANDLE_DUPLICATE 2
 SYSCALL_GATE kern_config_get SYS_KERN_CONFIG_GET 3
 SYSCALL_GATE kern_config_set SYS_KERN_CONFIG_SET 3
 
diff --git a/libmango/include-user/mango/handle.h b/libmango/include-user/mango/handle.h
index 8d8196d..f0fee10 100644
--- a/libmango/include-user/mango/handle.h
+++ b/libmango/include-user/mango/handle.h
@@ -5,5 +5,8 @@
 #include <mango/types.h>
 
 extern kern_status_t kern_handle_close(kern_handle_t handle);
+extern kern_status_t kern_handle_duplicate(
+	kern_handle_t handle,
+	kern_handle_t *out);
 
 #endif
diff --git a/syscall/dispatch.c b/syscall/dispatch.c
index 515c4fa..f9bca21 100644
--- a/syscall/dispatch.c
+++ b/syscall/dispatch.c
@@ -23,6 +23,7 @@ static const virt_addr_t syscall_table[] = {
 	SYSCALL_TABLE_ENTRY(ADDRESS_SPACE_RELEASE, address_space_release),
 	SYSCALL_TABLE_ENTRY(KERN_LOG, kern_log),
 	SYSCALL_TABLE_ENTRY(KERN_HANDLE_CLOSE, kern_handle_close),
+	SYSCALL_TABLE_ENTRY(KERN_HANDLE_DUPLICATE, kern_handle_duplicate),
 	SYSCALL_TABLE_ENTRY(KERN_CONFIG_GET, kern_config_get),
 	SYSCALL_TABLE_ENTRY(KERN_CONFIG_SET, kern_config_set),
 	SYSCALL_TABLE_ENTRY(CHANNEL_CREATE, channel_create),
diff --git a/syscall/handle.c b/syscall/handle.c
index cda125b..a303102 100644
--- a/syscall/handle.c
+++ b/syscall/handle.c
@@ -4,5 +4,36 @@
 kern_status_t sys_kern_handle_close(kern_handle_t handle)
 {
 	struct task *self = current_task();
+
 	return task_close_handle(self, handle);
 }
+
+kern_status_t sys_kern_handle_duplicate(
+	kern_handle_t handle,
+	kern_handle_t *out)
+{
+	struct task *self = current_task();
+
+	if (!validate_access_w(self, out, sizeof *out)) {
+		return KERN_MEMORY_FAULT;
+	}
+
+	unsigned long flags;
+	task_lock_irqsave(self, &flags);
+
+	struct object *obj = NULL;
+	handle_flags_t handle_flags = 0;
+	kern_status_t status
+		= task_resolve_handle(self, handle, &obj, &handle_flags);
+	if (status != KERN_OK) {
+		task_unlock_irqrestore(self, flags);
+		return status;
+	}
+
+	status = task_open_handle(self, obj, handle_flags, out);
+	object_unref(obj);
+
+	task_unlock_irqrestore(self, flags);
+
+	return status;
+}