| From | Luis Henriques <> | Subject | [PATCH 3.11 080/182] mac80211: fix potential use-after-free | Date | Thu, 24 Apr 2014 09:50:05 +0100 |
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3.11.10.9 -stable review patch. If anyone has any objections, please let me know.
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From: Johannes Berg <johannes.berg@intel.com>
commit d2722f8b87fb172ff2f31d3a2816b31d58678d40 upstream.
The bss struct might be freed in ieee80211_rx_bss_put(), so we shouldn't use it afterwards.
Fixes: 817cee7675237 ("mac80211: track AP's beacon rate and give it to the driver") Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Luis Henriques <luis.henriques@canonical.com> --- net/mac80211/mlme.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index a83d76a..06f71fb 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -2871,8 +2871,8 @@ 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); } } -- 1.9.1
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