diff mbox series

[v2] Bluetooth: HCI: Fix potential null-ptr-deref

Message ID 20240502160931.1135175-1-iam@sung-woo.kim
State Accepted
Commit a98faa46675b8c2f425ff4c5aed6e7024ed6913c
Headers show
Series [v2] Bluetooth: HCI: Fix potential null-ptr-deref | expand

Commit Message

Sungwoo Kim May 2, 2024, 4:09 p.m. UTC 
Fix potential null-ptr-deref in hci_le_big_sync_established_evt().

Fixes: f777d8827817 (Bluetooth: ISO: Notify user space about failed bis connections)
Signed-off-by: Sungwoo Kim <iam@sung-woo.kim>
---
v1 -> v2:
- add a Fixes tag
- make the commit message concise

 net/bluetooth/hci_event.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 4a27e4a17..d72d238c1 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -7037,6 +7037,8 @@  static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
 			u16 handle = le16_to_cpu(ev->bis[i]);
 
 			bis = hci_conn_hash_lookup_handle(hdev, handle);
+			if (!bis)
+				continue;
 
 			set_bit(HCI_CONN_BIG_SYNC_FAILED, &bis->flags);
 			hci_connect_cfm(bis, ev->status);