linux-kernel - Re: [PATCH v2] wifi: at76c50x: fix use after free access in at76

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Message-ID: <e911f15a-51d5-4741-89ee-b1422dec07ab@web.de>
Date: Sun, 30 Mar 2025 14:01:32 +0200
From: Markus Elfring <Markus.Elfring@....de>
To: Abdun Nihaal <abdun.nihaal@...il.com>, linux-wireless@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org,
 Johannes Berg <johannes@...solutions.net>
Cc: LKML <linux-kernel@...r.kernel.org>,
 Alexandre Belloni <alexandre.belloni@...tlin.com>,
 Alexey Khoroshilov <khoroshilov@...ras.ru>,
 Claudiu Beznea <claudiu.beznea@...on.dev>,
 Emmanuel Grumbach <emmanuel.grumbach@...el.com>,
 Erick Archer <erick.archer@...look.com>,
 "John W. Linville" <linville@...driver.com>, Kalle Valo <kvalo@...nel.org>,
 Miri Korenblit <miriam.rachel.korenblit@...el.com>,
 Nicolas Ferre <nicolas.ferre@...rochip.com>
Subject: Re: [PATCH v2] wifi: at76c50x: fix use after free access in
 at76_disconnect

> The memory pointed to by priv is freed at the end of at76_delete_device
> function (using ieee80211_free_hw). But the code then accesses the udev
> field of the freed object to put the USB device. This may also lead to a
> memory leak of the usb device. Fix this by using udev from interface.

Would you like to append parentheses to any function names?

Regards,
Markus