commit: 901ceba4e81e9dd6b4a3c4c37ee22000a6c5c65f
From: Stone Piao <piaoyun@xxxxxxxxxxx>
Date: Fri, 29 Mar 2013 19:21:21 -0700
Subject: mwifiex: limit channel number not to overflow memory
Limit the channel number in scan request, or the driver scan
config structure memory will be overflowed.
Cc: <stable@xxxxxxxxxxxxxxx> # 3.5+
Signed-off-by: Stone Piao <piaoyun@xxxxxxxxxxx>
Signed-off-by: Bing Zhao <bzhao@xxxxxxxxxxx>
Signed-off-by: John W. Linville <linville@xxxxxxxxxxxxx>
---
drivers/net/wireless/mwifiex/cfg80211.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/mwifiex/cfg80211.c b/drivers/net/wireless/mwifiex/cfg80211.c
index a44023a..8aaf56a 100644
--- a/drivers/net/wireless/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/mwifiex/cfg80211.c
@@ -1892,7 +1892,8 @@ mwifiex_cfg80211_scan(struct wiphy *wiphy,
}
}
- for (i = 0; i < request->n_channels; i++) {
+ for (i = 0; i < min_t(u32, request->n_channels,
+ MWIFIEX_USER_SCAN_CHAN_MAX); i++) {
chan = request->channels[i];
priv->user_scan_cfg->chan_list[i].chan_number = chan->hw_value;
priv->user_scan_cfg->chan_list[i].radio_type = chan->band;
--
1.7.10.4
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