ath6kl: Fix possible unaligned memory access in ath6kl_get_rsn_capab()

alignment is not taken care in accessing pairwise cipher and AKM suite
count which are parsed from rsn ie. Fix this alignment issue.

Reported-by: Joe Perches <joe@perches.com>
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

diff --git a/drivers/net/wireless/ath/ath6kl/cfg80211.c b/drivers/net/wireless/ath/ath6kl/cfg80211.c
index 6ea5ae5..6b6bf93 100644 (file)
--- a/drivers/net/wireless/ath/ath6kl/cfg80211.c
+++ b/drivers/net/wireless/ath/ath6kl/cfg80211.c
@@ -2591,14 +2591,14 @@ static int ath6kl_get_rsn_capab(struct cfg80211_beacon_data *beacon,
        /* skip pairwise cipher suite */
        if (rsn_ie_len < 2)
                return -EINVAL;
-       cnt = *((u16 *) rsn_ie);
+       cnt = get_unaligned_le16(rsn_ie);
        rsn_ie += (2 + cnt * 4);
        rsn_ie_len -= (2 + cnt * 4);
 
        /* skip akm suite */
        if (rsn_ie_len < 2)
                return -EINVAL;
-       cnt = *((u16 *) rsn_ie);
+       cnt = get_unaligned_le16(rsn_ie);
        rsn_ie += (2 + cnt * 4);
        rsn_ie_len -= (2 + cnt * 4);