From 7dc764e861dd704ce554f2f5275761e348b07c3c Mon Sep 17 00:00:00 2001 From: Jo-Philipp Wich Date: Fri, 22 Jul 2011 14:49:52 +0000 Subject: [PATCH] libiwinfo: fix segfaults in nl80211 hwmodelist and freqlist operations if called on a not existing phy --- contrib/package/iwinfo/src/iwinfo_nl80211.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) 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) -- 2.30.2