From: David Barksdale <amatus@amat.us>
Date: Sat, 23 Sep 2017 16:36:59 +0000 (-0500)
Subject: Fix info message header size check
X-Git-Tag: gnunet-0.11.0rc0~104^2~27
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=485460866a75569682ee7b8516229002e3271031;p=oweals%2Fgnunet.git

Fix info message header size check
---

diff --git a/src/peerinfo/peerinfo_api.c b/src/peerinfo/peerinfo_api.c
index b75d4e291..8b47ed444 100644
--- a/src/peerinfo/peerinfo_api.c
+++ b/src/peerinfo/peerinfo_api.c
@@ -334,11 +334,12 @@ handle_info (void *cls,
 {
   struct GNUNET_PEERINFO_Handle *h = cls;
   struct GNUNET_PEERINFO_IteratorContext *ic = h->ic_head;
-  const struct GNUNET_HELLO_Message *hello;
+  const struct GNUNET_HELLO_Message *hello = NULL;
   uint16_t ms;
 
   ms = ntohs (im->header.size);
-  hello = (0 == ms) ? NULL : (const struct GNUNET_HELLO_Message *) &im[1];
+  if (ms > sizeof (struct InfoMessage))
+    hello = (const struct GNUNET_HELLO_Message *) &im[1];
   if (NULL != ic->callback)
     ic->callback (ic->callback_cls,
                   &im->peer,