From: John W. Linville <linville@tuxdriver.com>
Date: Tue, 15 May 2007 20:14:40 +0000 (-0400)
Subject: [PATCH] mac80211: avoid null ptr deref in ieee80211_ibss_add_sta
X-Git-Tag: firefly_0821_release~28842^2~1^2
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=91fa558ba28b0014205f2c1a75b1cceb4298aa04;p=firefly-linux-kernel-4.4.55.git

[PATCH] mac80211: avoid null ptr deref in ieee80211_ibss_add_sta

avoid sdata null pointer dereference in ieee80211_ibss_add_sta.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

diff --git a/net/mac80211/ieee80211_sta.c b/net/mac80211/ieee80211_sta.c
index dbac8583f394..9f30ae4c2ab3 100644
--- a/net/mac80211/ieee80211_sta.c
+++ b/net/mac80211/ieee80211_sta.c
@@ -2997,7 +2997,7 @@ struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev,
 {
 	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 	struct sta_info *sta;
-	struct ieee80211_sub_if_data *sdata = NULL;
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 
 	/* TODO: Could consider removing the least recently used entry and
 	 * allow new one to be added. */