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Commit 860c6e6a authored by Ivan Kuten's avatar Ivan Kuten Committed by John W. Linville
Browse files

mac80211: fix unaligned access in ieee80211_wep_encrypt_data 



Signed-off-by: default avatarIvan Kuten <ivan.kuten@promwad.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent b50563a6

net/mac80211/wep.c

+4 −3
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@ 
#include <linux/err.h>

#include <linux/mm.h>

#include <linux/scatterlist.h>

#include <asm/unaligned.h>



#include <net/mac80211.h>

#include "ieee80211_i.h"
@@ -125,10 +126,10 @@ void ieee80211_wep_encrypt_data(struct crypto_blkcipher *tfm, u8 *rc4key, 
{

	struct blkcipher_desc desc = { .tfm = tfm };

	struct scatterlist sg;

	__le32 *icv;

	__le32 icv;



	icv = (__le32 *)(data + data_len);

	*icv = cpu_to_le32(~crc32_le(~0, data, data_len));

	icv = cpu_to_le32(~crc32_le(~0, data, data_len));

	put_unaligned(icv, (__le32 *)(data + data_len));



	crypto_blkcipher_setkey(tfm, rc4key, klen);

	sg_init_one(&sg, data, data_len + WEP_ICV_LEN);