This is a note to let you know that I've just added the patch titled drivers: net: fix memory leak in atusb_probe to the 5.11-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: drivers-net-fix-memory-leak-in-atusb_probe.patch and it can be found in the queue-5.11 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 6b9fbe16955152626557ec6f439f3407b7769941 Mon Sep 17 00:00:00 2001 From: Pavel Skripkin <paskripkin@xxxxxxxxx> Date: Thu, 1 Apr 2021 07:46:24 +0300 Subject: drivers: net: fix memory leak in atusb_probe From: Pavel Skripkin <paskripkin@xxxxxxxxx> commit 6b9fbe16955152626557ec6f439f3407b7769941 upstream. syzbot reported memory leak in atusb_probe()[1]. The problem was in atusb_alloc_urbs(). Since urb is anchored, we need to release the reference to correctly free the urb backtrace: [<ffffffff82ba0466>] kmalloc include/linux/slab.h:559 [inline] [<ffffffff82ba0466>] usb_alloc_urb+0x66/0xe0 drivers/usb/core/urb.c:74 [<ffffffff82ad3888>] atusb_alloc_urbs drivers/net/ieee802154/atusb.c:362 [inline][2] [<ffffffff82ad3888>] atusb_probe+0x158/0x820 drivers/net/ieee802154/atusb.c:1038 [1] Reported-by: syzbot+28a246747e0a465127f3@xxxxxxxxxxxxxxxxxxxxxxxxx Signed-off-by: Pavel Skripkin <paskripkin@xxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/net/ieee802154/atusb.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/net/ieee802154/atusb.c +++ b/drivers/net/ieee802154/atusb.c @@ -365,6 +365,7 @@ static int atusb_alloc_urbs(struct atusb return -ENOMEM; } usb_anchor_urb(urb, &atusb->idle_urbs); + usb_free_urb(urb); n--; } return 0; Patches currently in stable-queue which might be from paskripkin@xxxxxxxxx are queue-5.11/drivers-net-fix-memory-leak-in-atusb_probe.patch queue-5.11/drivers-net-fix-memory-leak-in-peak_usb_create_dev.patch