From: Jo-Philipp Wich <jow@openwrt.org>
Date: Fri, 22 Jul 2011 14:49:52 +0000 (+0000)
Subject: libiwinfo: fix segfaults in nl80211 hwmodelist and freqlist operations if called... 
X-Git-Tag: 0.11.0~1905
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=7dc764e861dd704ce554f2f5275761e348b07c3c;p=project%2Fluci.git

libiwinfo: fix segfaults in nl80211 hwmodelist and freqlist operations if called on a not existing phy
---

diff --git a/contrib/package/iwinfo/src/iwinfo_nl80211.c b/contrib/package/iwinfo/src/iwinfo_nl80211.c
index 5828ee98de..468ad9d705 100644
--- a/contrib/package/iwinfo/src/iwinfo_nl80211.c
+++ b/contrib/package/iwinfo/src/iwinfo_nl80211.c
@@ -1438,7 +1438,7 @@ int nl80211_get_freqlist(const char *ifname, char *buf, int *len)
 	if( req )
 	{
 		res = nl80211_send(req);
-		if( res )
+		if( res && res->attr[NL80211_ATTR_WIPHY_BANDS] )
 		{
 			nla_for_each_nested(band,
 				res->attr[NL80211_ATTR_WIPHY_BANDS], bands_remain)
@@ -1537,7 +1537,7 @@ int nl80211_get_hwmodelist(const char *ifname, int *buf)
 	if( req )
 	{
 		res = nl80211_send(req);
-		if( res )
+		if( res && res->attr[NL80211_ATTR_WIPHY_BANDS] )
 		{
 			nla_for_each_nested(band,
 				res->attr[NL80211_ATTR_WIPHY_BANDS], bands_remain)