diff mbox series

ipw2x00: Fix potential NULL dereference in libipw_xmit()

Message ID 1648797055-25730-1-git-send-email-baihaowen@meizu.com
State New
Headers show
Series ipw2x00: Fix potential NULL dereference in libipw_xmit() | expand

Commit Message

baihaowen April 1, 2022, 7:10 a.m. UTC 
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 mbox series

Patch

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;