[PATCH] mac80211: fix bug in ieee80211_build_probe_req
DORMANTno replies
From: Johannes Berg <johannes@sipsolutions.net>
Date: 2011-11-08 12:04:46
From: Johannes Berg <redacted> ieee80211_probereq_get() can return NULL in which case we should clean up & return NULL in ieee80211_build_probe_req() as well. Cc: stable@vger.kernel.org Signed-off-by: Johannes Berg <redacted> --- net/mac80211/util.c | 4 ++++ 1 file changed, 4 insertions(+)
--- a/net/mac80211/util.c 2011-11-08 09:24:02.000000000 +0100
+++ b/net/mac80211/util.c 2011-11-08 12:50:12.000000000 +0100@@ -880,6 +880,8 @@ struct sk_buff *ieee80211_build_probe_re skb = ieee80211_probereq_get(&local->hw, &sdata->vif, ssid, ssid_len, buf, buf_len); + if (!skb) + goto out; if (dst) { mgmt = (struct ieee80211_mgmt *) skb->data;
@@ -888,6 +890,8 @@ struct sk_buff *ieee80211_build_probe_re } IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; + + out: kfree(buf); return skb;