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ipw2x00: Fix potential NULL dereference in libipw_xmit()

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[ Upstream commit e8366bbabe1d207cf7c5b11ae50e223ae6fc278b ]

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

Signed-off-by: Haowen Bai <baihaowen@meizu.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/1648797055-25730-1-git-send-email-baihaowen@meizu.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Haowen Bai 2022-04-01 15:10:54 +08:00 committed by Greg Kroah-Hartman
parent cadee8777e
commit 1ff6b0727c
1 changed files with 1 additions and 1 deletions
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2
drivers/net/wireless/intel/ipw2x00/libipw_tx.c
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@ -397,7 +397,7 @@ 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;