diff --git a/crates/libcrux-ml-dsa/RUSTSEC-0000-0000.md b/crates/libcrux-ml-dsa/RUSTSEC-0000-0000.md
new file mode 100644
index 000000000..c352a66b3
--- /dev/null
+++ b/crates/libcrux-ml-dsa/RUSTSEC-0000-0000.md
@@ -0,0 +1,21 @@
+```toml
+[advisory]
+id = "RUSTSEC-0000-0000"
+package = "libcrux-ml-dsa"
+date = "2025-11-29"
+url = "https://github.com/cryspen/libcrux/issues/1220"
+categories = ["crypto-failure"]
+
+[versions]
+patched = [">= 0.0.4"]
+unaffected = ["<= 0.0.3"]
+
+[affected]
+arch = ["aarch64"]
+```
+
+# Incorrect calculation on aarch64
+
+libcrux-ml-dsa 0.0.3 produces incorrect signatures on aarch64.
+The exact cryptographic implications of the incorrect calculation
+are unclear and have not been analyzed.
diff --git a/crates/libcrux-ml-kem/RUSTSEC-0000-0000.md b/crates/libcrux-ml-kem/RUSTSEC-0000-0000.md
new file mode 100644
index 000000000..023376b2d
--- /dev/null
+++ b/crates/libcrux-ml-kem/RUSTSEC-0000-0000.md
@@ -0,0 +1,21 @@
+```toml
+[advisory]
+id = "RUSTSEC-0000-0000"
+package = "libcrux-ml-kem"
+date = "2025-11-29"
+url = "https://github.com/cryspen/libcrux/issues/1220"
+categories = ["crypto-failure"]
+
+[versions]
+patched = [">= 0.0.4"]
+unaffected = ["<= 0.0.3"]
+
+[affected]
+arch = ["aarch64"]
+```
+
+# Incorrect calculation on aarch64
+
+libcrux-ml-kem 0.0.3 produces incorrect shared secrets on aarch64.
+The exact cryptographic implications of the incorrect calculation
+are unclear and have not been analyzed.