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
