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-rw-r--r--src/core/or/sendme.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/core/or/sendme.c b/src/core/or/sendme.c
index 46fdc3ca1c..e7c65d99e2 100644
--- a/src/core/or/sendme.c
+++ b/src/core/or/sendme.c
@@ -412,6 +412,11 @@ sendme_process_circuit_level(crypt_path_t *layer_hint,
/* If we are the origin of the circuit, we are the Client so we use the
* layer hint (the Exit hop) for the package window tracking. */
if (CIRCUIT_IS_ORIGIN(circ)) {
+ /* If we are the origin of the circuit, it is impossible to not have a
+ * cpath. Just in case, bug on it and close the circuit. */
+ if (BUG(layer_hint == NULL)) {
+ return -END_CIRC_REASON_TORPROTOCOL;
+ }
if ((layer_hint->package_window + CIRCWINDOW_INCREMENT) >
CIRCWINDOW_START_MAX) {
static struct ratelim_t exit_warn_ratelim = RATELIM_INIT(600);