From: Haowen Bai <baihaowen@meizu.com>
To: Stanislav Yakovlev <stas.yakovlev@gmail.com>,
Kalle Valo <kvalo@kernel.org>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>
Cc: Haowen Bai <baihaowen@meizu.com>,
<linux-wireless@vger.kernel.org>, <netdev@vger.kernel.org>,
<linux-kernel@vger.kernel.org>
Subject: [PATCH] ipw2x00: Fix potential NULL dereference in libipw_xmit()
Date: Fri, 1 Apr 2022 15:10:54 +0800 [thread overview]
Message-ID: <1648797055-25730-1-git-send-email-baihaowen@meizu.com> (raw)
crypt and crypt->ops could be null, so we need to checking null
before dereference
Signed-off-by: Haowen Bai <baihaowen@meizu.com>
---
drivers/net/wireless/intel/ipw2x00/libipw_tx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/intel/ipw2x00/libipw_tx.c b/drivers/net/wireless/intel/ipw2x00/libipw_tx.c
index 36d1e6b2568d..4aec1fce1ae2 100644
--- a/drivers/net/wireless/intel/ipw2x00/libipw_tx.c
+++ b/drivers/net/wireless/intel/ipw2x00/libipw_tx.c
@@ -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;
--
2.7.4
next reply other threads:[~2022-04-01 7:11 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-01 7:10 Haowen Bai [this message]
2022-04-06 12:14 ` [PATCH] ipw2x00: Fix potential NULL dereference in libipw_xmit() Kalle Valo
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