| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.14 42/83] mac80211: fix potential use-after-free | Date | Sun, 11 May 2014 21:19:43 +0200 |
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3.14-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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- net/mac80211/mlme.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -2708,8 +2708,8 @@ static void ieee80211_rx_bss_info(struct 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); } }
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