From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794585437; b=uQaunmocpoCql3VBvWrEdqVqslfirOUkTsQsUqfB1iN7/yUZ/fbZZky9BcZSIFR1xc/d ghteK+xwKStxhPvhygIRRkzkaKUUV5Zh/mZfEvrjsDcfW4iaPcNAEp9u9S/Fdmi5i0y/F 90i4G/Ps119LDkpj8xNyM1DVArp/xmWLF5mqzN/ld+ljMdeGwltw1qb87Js4oY4PibaJW +OSzOiv63duQmicxvrT332KbAUEsF3Jd795k3vDtI78X6LKO5N740uYGMmvZVqIrMMnrZ cMoMhc12Qx69/9O6/c8EGv818dEWe7xPN3x02sLqUDj+8/U5kIWlm2toNkyg+N8Q5Gg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794585437; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=XP0/Mu5q4s6zSUYXpXIPJ+8v6lafPqN86uXGa9NHacA=; b=VuWUUgUAQenEH2I87qzYwBj8shp2p1Ge9sQIiIhHnXCdgVPixNqZbYP87CVQw3/h/I2J U84SJYUNK4ITH+4ZdjRGKOHcesIsMIqIMBRH9PTK5xNnFi5wH9kcLdim0I/idab5MJ9NJ JZ3z7F+HqO5G6oqhIToROiqRltFPLh8Gve8gPbYkglCTlVAUFIvE81nnoKlIM9kMqIXlF 5XIsYJzqsaSPvToMwqNXQY73/Zz91UIckLbC/adKJzjc5iWzQnzT01SVHLjDGWM1R3pDy PGwTnF/0auwaYqFqyhJXlwpkiAjtzXGCLM5Ws8A54qBaEouZp9n2syIiQVqprrgPrZQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=xIzLBx7p; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E2A31606A8A3; Fri, 13 Nov 2026 15:57:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=xIzLBx7p Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8EB2B1F000C4; Fri, 13 Nov 2026 15:57:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794585436; bh=XP0/Mu5q4s6zSUYXpXIPJ+8v6lafPqN86uXGa9NHacA=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=xIzLBx7pJzns3zW+9nfKMRRZjWLWzk2DN02XsvX5qJ9J8ZI5mtYemOFxZ3RlE0v9c EJYwsOuKR/ZiHva3sxdz8vLdyCkL4PdG+zHE6Lpg/E4ix3ew/t4JspCs/QLGXvRHDJ Xry5JFAE4YQvnmBsdcxCEeqilF4Fw1UuX9Iy8Gbs= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Michael Grzeschik , Dominique Martinet , Sasha Levin Subject: [PATCH 7.3 055/507] net/9p/usbg: fix out_req buffer leak in disable_usb9pfs Date: Fri, 13 Nov 2026 10:45:59 -0500 Message-ID: <20261113153755.432428761@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261113153753.358973689@linuxfoundation.org> References: <20261113153753.358973689@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: patches@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.3-stable review patch. If anyone has any objections, please let me know. ------------------ From: Michael Grzeschik [ Upstream commit 5f9807270c7bda8f86b312ed1a8acd7716600555 ] usb9pfs->out_req is allocated with alloc_ep_req(), which also allocates the request's data buffer (req->buf). disable_usb9pfs() frees it with plain usb_ep_free_request(), which only frees the usb_request structure itself and leaks req->buf on every close. Use free_ep_req() instead, matching the allocator, as documented by its own comment ("Requests allocated via alloc_ep_req() *must* be freed by free_ep_req()"). Fixes: a3be076dc174 ("net/9p/usbg: Add new usb gadget function transport") Cc: stable@vger.kernel.org Assisted-by: Claude:claude-opus-4.8 Signed-off-by: Michael Grzeschik Message-ID: <20260922-usb9pfsfixes-v1-5-9d8dcc52904c@kernel.org> Signed-off-by: Dominique Martinet Signed-off-by: Sasha Levin --- net/9p/trans_usbg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/9p/trans_usbg.c b/net/9p/trans_usbg.c index e215d047de16c..af01323db69c0 100644 --- a/net/9p/trans_usbg.c +++ b/net/9p/trans_usbg.c @@ -287,7 +287,7 @@ static void disable_usb9pfs(struct f_usb9pfs *usb9pfs) } if (usb9pfs->out_req) { - usb_ep_free_request(usb9pfs->out_ep, usb9pfs->out_req); + free_ep_req(usb9pfs->out_ep, usb9pfs->out_req); usb9pfs->out_req = NULL; } dev_dbg(&cdev->gadget->dev, "%s disabled\n", -- 2.53.0