diff --git a/changes/bug17398 b/changes/bug17398
new file mode 100644
index 0000000000..66e27a6966
--- /dev/null
+++ b/changes/bug17398
@@ -0,0 +1,3 @@
+  o Minor bugfixes (memory leaks):
+    - Fix a memory leak in ed25519 batch signature checking.
+      Fixes bug 17398; bugfix on 0.2.6.1-alpha.
diff --git a/src/common/crypto_ed25519.c b/src/common/crypto_ed25519.c
index 7e995f4616..1749efc34c 100644
--- a/src/common/crypto_ed25519.c
+++ b/src/common/crypto_ed25519.c
@@ -260,6 +260,7 @@ ed25519_checksig_batch(int *okay_out,
     tor_free(ms);
     tor_free(lens);
     tor_free(pks);
+    tor_free(sigs);
     if (! okay_out)
       tor_free(oks);
   }