diff mbox series

[2/5] Bluetooth: qca: fix info leak when fetching board id

Message ID 20240501123456.6712-3-johan+linaro@kernel.org
State Accepted
Commit 0438daa3384a12f24e62a830650c719879baf0d9
Headers show
Series Bluetooth: qca: info leak fixes and cleanups | expand

Commit Message

Johan Hovold May 1, 2024, 12:34 p.m. UTC 
Add the missing sanity check when fetching the board id to avoid leaking
slab data when later requesting the firmware.

Fixes: a7f8dedb4be2 ("Bluetooth: qca: add support for QCA2066")
Cc: stable@vger.kernel.org	# 6.7
Cc: Tim Jiang <quic_tjiang@quicinc.com>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
 drivers/bluetooth/btqca.c | 5 +++++
 1 file changed, 5 insertions(+)
diff mbox series

Patch

diff --git a/drivers/bluetooth/btqca.c b/drivers/bluetooth/btqca.c
index a508d79d9aaa..638074992c82 100644
--- a/drivers/bluetooth/btqca.c
+++ b/drivers/bluetooth/btqca.c
@@ -252,6 +252,11 @@  static int qca_read_fw_board_id(struct hci_dev *hdev, u16 *bid)
 		goto out;
 	}
 
+	if (skb->len < 3) {
+		err = -EILSEQ;
+		goto out;
+	}
+
 	*bid = (edl->data[1] << 8) + edl->data[2];
 	bt_dev_dbg(hdev, "%s: bid = %x", __func__, *bid);