Commit e8366bba authored by Haowen Bai's avatar Haowen Bai Committed by Kalle Valo

ipw2x00: Fix potential NULL dereference in libipw_xmit()

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
parent 11800d89
...@@ -383,7 +383,7 @@ netdev_tx_t libipw_xmit(struct sk_buff *skb, struct net_device *dev) ...@@ -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 /* Each fragment may need to have room for encryption
* pre/postfix */ * pre/postfix */
if (host_encrypt) if (host_encrypt && crypt && crypt->ops)
bytes_per_frag -= crypt->ops->extra_mpdu_prefix_len + bytes_per_frag -= crypt->ops->extra_mpdu_prefix_len +
crypt->ops->extra_mpdu_postfix_len; crypt->ops->extra_mpdu_postfix_len;
......
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