[PATCH v3] Bluetooth: HCI: Fix potential null-ptr-deref

[PATCH v3] Bluetooth: HCI: Fix potential null-ptr-deref

[Sungwoo Kim]

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
v2 -> v3:
- fix a wrong Fixes tag format

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

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);
-- 
2.34.1

Re: [PATCH v3] Bluetooth: HCI: Fix potential null-ptr-deref

[patchwork-bot+bluetooth]

Hello:

This patch was applied to bluetooth/bluetooth-next.git (master)
by Luiz Augusto von Dentz <luiz.von.dentz@intel.com>:

On Thu,  2 May 2024 13:17:10 -0400 you wrote:
> 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
> v2 -> v3:
> - fix a wrong Fixes tag format
> 
> [...]

Here is the summary with links:
  - [v3] Bluetooth: HCI: Fix potential null-ptr-deref
    https://git.kernel.org/bluetooth/bluetooth-next/c/5c7d0f260187

You are awesome, thank you!
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