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mac80211: fix potential use-after-free 

The bss struct might be freed in ieee80211_rx_bss_put(),
so we shouldn't use it afterwards.

Cc: stable@vger.kernel.org (3.10+)
Fixes: 817cee7675 ("mac80211: track AP's beacon rate and give it to the driver")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2014-03-04 11:43:28 +01:00
parent 255e25b0e5
commit d2722f8b87
1 changed files with 1 additions and 1 deletions
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2
net/mac80211/mlme.c
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@ -2780,8 +2780,8 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems,
channel);
if (bss) {
ieee80211_rx_bss_put(local, bss);
sdata->vif.bss_conf.beacon_rate = bss->beacon_rate;
ieee80211_rx_bss_put(local, bss);
}
}