* [PATCH] nfc: st-nci: fix a NULL pointer dereference
@ 2019-03-12 8:07 Kangjie Lu
0 siblings, 0 replies; only message in thread
From: Kangjie Lu @ 2019-03-12 8:07 UTC (permalink / raw)
To: kjlu; +Cc: pakki001, Samuel Ortiz, linux-wireless, linux-kernel
In case devm_kzalloc fails, the fix returns -ENOMEM to avoid NULL
pointer dereference.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
---
drivers/nfc/st-nci/se.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/nfc/st-nci/se.c b/drivers/nfc/st-nci/se.c
index f55d082ace71..5d6e7e931bc6 100644
--- a/drivers/nfc/st-nci/se.c
+++ b/drivers/nfc/st-nci/se.c
@@ -344,6 +344,8 @@ static int st_nci_hci_connectivity_event_received(struct nci_dev *ndev,
transaction = (struct nfc_evt_transaction *)devm_kzalloc(dev,
skb->len - 2, GFP_KERNEL);
+ if (!transaction)
+ return -ENOMEM;
transaction->aid_len = skb->data[1];
memcpy(transaction->aid, &skb->data[2], transaction->aid_len);
--
2.17.1
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2019-03-12 8:07 [PATCH] nfc: st-nci: fix a NULL pointer dereference Kangjie Lu
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