cfg80211: avoid mem leak on driver hint set
commit 34f05f543f
upstream.
In the already-set and intersect case of a driver-hint, the previous
wiphy regdomain was not freed before being reset with a copy of the
cfg80211 regdomain.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Acked-by: Luis R. Rodriguez <mcgrof@suse.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -1547,7 +1547,7 @@ static enum reg_request_treatment
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reg_process_hint_driver(struct wiphy *wiphy,
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struct regulatory_request *driver_request)
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{
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const struct ieee80211_regdomain *regd;
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const struct ieee80211_regdomain *regd, *tmp;
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enum reg_request_treatment treatment;
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treatment = __reg_process_hint_driver(driver_request);
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@ -1566,7 +1566,10 @@ reg_process_hint_driver(struct wiphy *wiphy,
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kfree(driver_request);
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return REG_REQ_IGNORE;
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}
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tmp = get_wiphy_regdom(wiphy);
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rcu_assign_pointer(wiphy->regd, regd);
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rcu_free_regdom(tmp);
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}
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