This is a note to let you know that I've just added the patch titled
Bluetooth: Ignore too large handle values in BIG
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
bluetooth-ignore-too-large-handle-values-in-big.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 7b701f28d079852f6e49bdbfe2d5ca6472464b58
Author: Edward Adam Davis <eadavis@xxxxxx>
Date: Mon Jun 17 19:09:37 2024 +0800
Bluetooth: Ignore too large handle values in BIG
[ Upstream commit 015d79c96d62cd8a4a359fcf5be40d58088c936b ]
hci_le_big_sync_established_evt is necessary to filter out cases where the
handle value is belonging to ida id range, otherwise ida will be erroneously
released in hci_conn_cleanup.
Fixes: 181a42edddf5 ("Bluetooth: Make handle of hci_conn be unique")
Reported-by: syzbot+b2545b087a01a7319474@xxxxxxxxxxxxxxxxxxxxxxxxx
Closes: https://syzkaller.appspot.com/bug?extid=b2545b087a01a7319474
Signed-off-by: Edward Adam Davis <eadavis@xxxxxx>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index ffb7d43597a2d..727f040b65297 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -6905,6 +6905,10 @@ static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
bis = hci_conn_hash_lookup_handle(hdev, handle);
if (!bis) {
+ if (handle > HCI_CONN_HANDLE_MAX) {
+ bt_dev_dbg(hdev, "ignore too large handle %u", handle);
+ continue;
+ }
bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY,
HCI_ROLE_SLAVE, handle);
if (IS_ERR(bis))
