From eab6fbb509929d94a327afba037c3514a2634e9a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Hugo=20Beauz=C3=A9e-Luyssen?= <hugo@beauzee.fr>
Date: Thu, 6 Feb 2020 09:17:03 +0100
Subject: [PATCH] rr_read: Fix null pointer dereference

---
 src/rr.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/rr.c b/src/rr.c
index 8443588..87b518d 100644
--- a/src/rr.c
+++ b/src/rr.c
@@ -449,6 +449,8 @@ rr_read(const uint8_t *ptr, size_t *n, const uint8_t *root, struct rr_entry *ent
 
         p = ptr = rr_read_RR(ptr, n, root, entry, ans);
         if (ans == 0) return ptr;
+        if (ptr == NULL)
+                return (NULL);
 
         for (size_t i = 0; i < rr_num; ++i) {
                 if (rrs[i].type == entry->type) {