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 --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);