From: John Crispin <blogic@openwrt.org>
Date: Wed, 27 Aug 2014 17:51:07 +0000 (+0200)
Subject: fix potential null pointer deref when packets are forged
X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fmdnsd.git;a=commitdiff_plain;h=5896be28e9608800083fb14fbb56dffe932c5d46;ds=sidebyside

fix potential null pointer deref when packets are forged

Signed-off-by: John Crispin <blogic@openwrt.org>
---

diff --git a/cache.c b/cache.c
index cdc4a79..812478e 100644
--- a/cache.c
+++ b/cache.c
@@ -167,7 +167,7 @@ cache_record_find(char *record, int type, int port, int rdlength, uint8_t *rdata
 	if (!l)
 		return NULL;
 
-	while (l && !strcmp(l->record, record)) {
+	while (l && l->record && !strcmp(l->record, record)) {
 		struct cache_record *r = l;
 
 		l = avl_next_element(l, avl);