Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL 4.19 05/38] ipw2x00: Fix potential NULL dereference in libipw_xmit() | Date | Mon, 30 May 2022 09:48:51 -0400 |
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From: Haowen Bai <baihaowen@meizu.com>
[ 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> --- 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 84205aa508df..daa4f9eb08ff 100644 --- a/drivers/net/wireless/intel/ipw2x00/libipw_tx.c +++ b/drivers/net/wireless/intel/ipw2x00/libipw_tx.c @@ -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; -- 2.35.1
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