Commit ebeb3667 authored by Johan Hovold's avatar Johan Hovold Committed by Kalle Valo
Browse files

ath9k_htc: fix NULL-deref at probe 



Make sure to check the number of endpoints to avoid dereferencing a
NULL-pointer or accessing memory beyond the endpoint array should a
malicious device lack the expected endpoints.

Fixes: 36bcce43 ("ath9k_htc: Handle storage devices")
Cc: stable <stable@vger.kernel.org>     # 2.6.39+
Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
Signed-off-by: default avatarKalle Valo <kvalo@qca.qualcomm.com>
parent a7595a82

drivers/net/wireless/ath/ath9k/hif_usb.c

+3 −0
Original line number Diff line number Diff line
@@ -1220,6 +1220,9 @@ static int send_eject_command(struct usb_interface *interface) 
	u8 bulk_out_ep;

	int r;



	if (iface_desc->desc.bNumEndpoints < 2)

		return -ENODEV;



	/* Find bulk out endpoint */

	for (r = 1; r >= 0; r--) {

		endpoint = &iface_desc->endpoint[r].desc;