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cfg80211: fix regulatory NULL dereference

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By the time userspace returns with a response to
the regulatory domain request, the wiphy causing
the request might have gone away. If this is so,
reject the update but mark the request as having
been processed anyway.

Cc: Luis R. Rodriguez <lrodriguez@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2011-11-21 10:44:00 +01:00 committed by John W. Linville
parent 9c8f2c42c9
commit de3584bd62
1 changed files with 4 additions and 0 deletions
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4
net/wireless/reg.c
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@ -2035,6 +2035,10 @@ static int __set_regdom(const struct ieee80211_regdomain *rd)
}
request_wiphy = wiphy_idx_to_wiphy(last_request->wiphy_idx);
if (!request_wiphy) {
reg_set_request_processed();
return -ENODEV;
}
if (!last_request->intersect) {
int r;