From: Willem Toorop <willem@NLnetLabs.nl>
Date: Fri, 23 Sep 2011 21:07:41 +0000 (+0000)
Subject: Bugfix #411 empty non-terminal NSEC3s cause assertion failure in ldns_rdf_data
X-Git-Tag: release-1.6.11~5
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=316805d01d5dbd6f274768f490dc9a587a47e52e;p=thirdparty%2Fldns.git

Bugfix #411 empty non-terminal NSEC3s cause assertion failure in ldns_rdf_data
---

diff --git a/dnssec.c b/dnssec.c
index ccc1d3b9..b36e3f35 100644
--- a/dnssec.c
+++ b/dnssec.c
@@ -1347,8 +1347,12 @@ ldns_nsec_bitmap_covers_type(const ldns_rdf *nsec_bitmap, ldns_rr_type type)
 	uint16_t cur_type;
 	uint16_t pos = 0;
 	uint16_t bit_pos;
-	uint8_t *data = ldns_rdf_data(nsec_bitmap);
+	uint8_t *data;
 
+	if (nsec_bitmap == NULL) {
+		return false;
+	}
+	data = ldns_rdf_data(nsec_bitmap);
 	while(pos < ldns_rdf_size(nsec_bitmap)) {
 		window_block_nr = data[pos];
 		bitmap_length = data[pos + 1];