From ad5987b47e96a0fb6d13fea250e936aed000093c Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 13 Sep 2016 15:53:55 +0200 Subject: [PATCH] nl80211: validate number of probe response CSA counters 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 --- net/wireless/nl80211.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index f02653a08993..4809f4d2cdcc 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -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; -- 2.39.5