From 8908da7dce7711af59c7f43b122f73293dca27ab Mon Sep 17 00:00:00 2001
From: Darren Tucker <dtucker@zip.com.au>
Date: Thu, 28 Jun 2012 15:21:32 +1000
Subject:  - (dtucker) [openbsd-compat/getrrsetbyname-ldns.c] bz #2022: prevent
 null    pointer deref in the client when built with LDNS and using DNSSEC
 with a    CNAME.  Patch from gregdlg+mr at hochet info.

---
 openbsd-compat/getrrsetbyname-ldns.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'openbsd-compat/getrrsetbyname-ldns.c')

diff --git a/openbsd-compat/getrrsetbyname-ldns.c b/openbsd-compat/getrrsetbyname-ldns.c
index 8ce5678c9..19666346b 100644
--- a/openbsd-compat/getrrsetbyname-ldns.c
+++ b/openbsd-compat/getrrsetbyname-ldns.c
@@ -205,7 +205,8 @@ getrrsetbyname(const char *hostname, unsigned int rdclass,
 		}
 
 		if (rr->_rr_class == rrset->rri_rdclass &&
-		    rr->_rr_type == LDNS_RR_TYPE_RRSIG) {
+		    rr->_rr_type == LDNS_RR_TYPE_RRSIG &&
+		    rrset->rri_sigs) {
 			rdata = &rrset->rri_sigs[index_sig++];
 		}
 
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