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nl80211: validate number of probe response CSA counters

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Due to an apparent copy/paste bug, the number of counters for the
beacon configuration were checked twice, instead of checking the
number of probe response counters. Fix this to check the number of
probe response counters before parsing those.

Cc: stable@vger.kernel.org
Fixes: 9a774c78e211 ("cfg80211: Support multiple CSA counters")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2016-09-13 15:53:55 +02:00
parent 5df20f2141
commit ad5987b47e
1 changed files with 1 additions and 1 deletions
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2
net/wireless/nl80211.c
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@ -6978,7 +6978,7 @@ static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
params.n_counter_offsets_presp = len / sizeof(u16);
if (rdev->wiphy.max_num_csa_counters &&
(params.n_counter_offsets_beacon >
(params.n_counter_offsets_presp >
rdev->wiphy.max_num_csa_counters))
return -EINVAL;