File 0580-Verify-the-ref-fits-in-ei_decode_ref.patch of Package erlang

From 165a51f0cdc43bfc8f49781ae9871e8feea7b91a Mon Sep 17 00:00:00 2001
From: Rickard Green <rickard@erlang.org>
Date: Wed, 29 Apr 2020 22:22:14 +0200
Subject: [PATCH 4/4] Verify the ref fits in ei_decode_ref()

---
 lib/erl_interface/src/decode/decode_ref.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/erl_interface/src/decode/decode_ref.c b/lib/erl_interface/src/decode/decode_ref.c
index c9b38c1c3b..c10a02094e 100644
--- a/lib/erl_interface/src/decode/decode_ref.c
+++ b/lib/erl_interface/src/decode/decode_ref.c
@@ -54,6 +54,9 @@ int ei_decode_ref(const char *buf, int *index, erlang_ref *p)
       /* first the integer count */
       count = get16be(s);
 
+      if (count > sizeof(p->n)/sizeof(p->n[0]))
+          return -1; /* Not enough space in struct... */
+
       if (p) {
 	  p->len = count;
 	  if (get_atom(&s, p->node, NULL) < 0) return -1;
-- 
2.26.1