From f9a703e173849425079e29e63bf960c2625e0a85 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Wed, 12 Oct 2011 11:10:37 +0300 Subject: iwmc3200wifi: add a range check to iwm_cfg80211_get_key() Smatch complains that "key_index" is capped at 5 in nl80211_get_key() but iwm->keys[] only has 4 elements. I don't know if this is really needed, but the other ->get_key() implementations seemed to check for overflows so I've added a check here. Signed-off-by: Dan Carpenter Acked-by: Samuel Ortiz Signed-off-by: John W. Linville --- drivers/net/wireless/iwmc3200wifi/cfg80211.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/wireless/iwmc3200wifi/cfg80211.c b/drivers/net/wireless/iwmc3200wifi/cfg80211.c index ed57e440280..c42be81e979 100644 --- a/drivers/net/wireless/iwmc3200wifi/cfg80211.c +++ b/drivers/net/wireless/iwmc3200wifi/cfg80211.c @@ -187,13 +187,17 @@ static int iwm_cfg80211_get_key(struct wiphy *wiphy, struct net_device *ndev, struct key_params*)) { struct iwm_priv *iwm = ndev_to_iwm(ndev); - struct iwm_key *key = &iwm->keys[key_index]; + struct iwm_key *key; struct key_params params; IWM_DBG_WEXT(iwm, DBG, "Getting key %d\n", key_index); + if (key_index >= IWM_NUM_KEYS) + return -ENOENT; + memset(¶ms, 0, sizeof(params)); + key = &iwm->keys[key_index]; params.cipher = key->cipher; params.key_len = key->key_len; params.seq_len = key->seq_len; -- cgit v1.2.3