diff --git a/tests/ui/attributes/unsafe/unsafe-nonexistent-attribute.rs b/tests/ui/attributes/unsafe/unsafe-nonexistent-attribute.rs
new file mode 100644
index 000000000000..c7d7b712925d
--- /dev/null
+++ b/tests/ui/attributes/unsafe/unsafe-nonexistent-attribute.rs
@@ -0,0 +1,10 @@
+// This is a regression test for https://github.com/rust-lang/rust/issues/148453
+// We want the `cannot find attribute` error to appear before `is not an unsafe attribute`
+//@ edition: 2024
+
+#[unsafe(does_not_exist)]
+//~^ ERROR cannot find attribute
+//~| ERROR is not an unsafe attribute
+fn aa() {}
+
+fn main() {}
diff --git a/tests/ui/attributes/unsafe/unsafe-nonexistent-attribute.stderr b/tests/ui/attributes/unsafe/unsafe-nonexistent-attribute.stderr
new file mode 100644
index 000000000000..42d9425ed31f
--- /dev/null
+++ b/tests/ui/attributes/unsafe/unsafe-nonexistent-attribute.stderr
@@ -0,0 +1,16 @@
+error: cannot find attribute `does_not_exist` in this scope
+  --> $DIR/unsafe-nonexistent-attribute.rs:5:10
+   |
+LL | #[unsafe(does_not_exist)]
+   |          ^^^^^^^^^^^^^^
+
+error: `does_not_exist` is not an unsafe attribute
+  --> $DIR/unsafe-nonexistent-attribute.rs:5:3
+   |
+LL | #[unsafe(does_not_exist)]
+   |   ^^^^^^ this is not an unsafe attribute
+   |
+   = note: extraneous unsafe is not allowed in attributes
+
+error: aborting due to 2 previous errors
+