From: Shital Jaju <shitalj@broadcom.com>
Date: Thu, 30 Jan 2014 11:44:07 +0000 (+0200)
Subject: nl80211: Verify that ifindex attribute is included in survey
X-Git-Tag: hostap_2_1~27
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=e28f39b7e93565bb54b6c75de1e588d952caba11;p=thirdparty%2Fhostap.git

nl80211: Verify that ifindex attribute is included in survey

This checks if the NL80211_ATTR_IFINDEX attribute is present before
trying to get the value of interface index.

Signed-hostap: Shital Jaju <shitalj@broadcom.com>
---

diff --git a/src/drivers/driver_nl80211.c b/src/drivers/driver_nl80211.c
index 646d3f830..90a73f719 100644
--- a/src/drivers/driver_nl80211.c
+++ b/src/drivers/driver_nl80211.c
@@ -10619,6 +10619,9 @@ static int survey_handler(struct nl_msg *msg, void *arg)
 	nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 		  genlmsg_attrlen(gnlh, 0), NULL);
 
+	if (!tb[NL80211_ATTR_IFINDEX])
+		return NL_SKIP;
+
 	ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
 
 	if (!tb[NL80211_ATTR_SURVEY_INFO])