This is a note to let you know that I've just added the patch titled ath9k_htc: fix NULL-deref at probe to the 4.4-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: ath9k_htc-fix-null-deref-at-probe.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From ebeb36670ecac36c179b5fb5d5c88ff03ba191ec Mon Sep 17 00:00:00 2001 From: Johan Hovold <johan@xxxxxxxxxx> Date: Mon, 13 Mar 2017 13:44:20 +0100 Subject: ath9k_htc: fix NULL-deref at probe From: Johan Hovold <johan@xxxxxxxxxx> commit ebeb36670ecac36c179b5fb5d5c88ff03ba191ec upstream. 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: 36bcce430657 ("ath9k_htc: Handle storage devices") Signed-off-by: Johan Hovold <johan@xxxxxxxxxx> Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/net/wireless/ath/ath9k/hif_usb.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/net/wireless/ath/ath9k/hif_usb.c +++ b/drivers/net/wireless/ath/ath9k/hif_usb.c @@ -1217,6 +1217,9 @@ static int send_eject_command(struct usb 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; Patches currently in stable-queue which might be from johan@xxxxxxxxxx are queue-4.4/watchdog-pcwd_usb-fix-null-deref-at-probe.patch queue-4.4/ath9k_htc-fix-null-deref-at-probe.patch