donau

commit 9bf9696a85af1b66348f88f6d932445e8ac7f7f6
parent f866768c4e51abedac15666f08720a3b42384855
Author: Christian Grothoff <grothoff@gnunet.org>
Date:   Mon, 20 Jul 2026 00:01:51 +0200

check for du_sigs being NULL before derefing

Diffstat:
M
src/pq/pq_query_helper.c
 | 
9
++++++---

1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/src/pq/pq_query_helper.c b/src/pq/pq_query_helper.c
@@ -801,9 +801,12 @@ array_cleanup (void *cls,
     GNUNET_free (*(info->sizes));
 
   GNUNET_assert (NULL != info->num);
-  for (size_t i = 0; i < *info->num; i++)
-    if (NULL != du_sigs[i].blinded_sig)
-      GNUNET_CRYPTO_blinded_sig_decref (du_sigs[i].blinded_sig);
+  /* A failed extract_array_generic() sets *dst (du_sigs) to NULL but may
+     leave *info->num != 0; guard against dereferencing a NULL array. */
+  if (NULL != du_sigs)
+    for (size_t i = 0; i < *info->num; i++)
+      if (NULL != du_sigs[i].blinded_sig)
+        GNUNET_CRYPTO_blinded_sig_decref (du_sigs[i].blinded_sig);
   GNUNET_free (info);
   GNUNET_free (du_sigs);
   *dst = NULL;