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Commit 8fb1b9be authored by Haowen Bai's avatar Haowen Bai Committed by Greg Kroah-Hartman
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ipw2x00: Fix potential NULL dereference in libipw_xmit() 



[ Upstream commit e8366bbabe1d207cf7c5b11ae50e223ae6fc278b ]

crypt and crypt->ops could be null, so we need to checking null
before dereference

Signed-off-by: default avatarHaowen Bai <baihaowen@meizu.com>
Signed-off-by: default avatarKalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/1648797055-25730-1-git-send-email-baihaowen@meizu.com


Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 30338091

drivers/net/wireless/intel/ipw2x00/libipw_tx.c

+1 −1
Original line number Diff line number Diff line
@@ -383,7 +383,7 @@ netdev_tx_t libipw_xmit(struct sk_buff *skb, struct net_device *dev) 


		/* Each fragment may need to have room for encryption

		 * pre/postfix */

		if (host_encrypt)

		if (host_encrypt && crypt && crypt->ops)

			bytes_per_frag -= crypt->ops->extra_mpdu_prefix_len +

			    crypt->ops->extra_mpdu_postfix_len;