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=1794591010; b=hMi8kWa+5IgB0Za0dsNAS84bYL98Fcojc0uhfAfFGYVLSaQsagI2Kg+GzX4uJ3jaQkVa A8yBLdrrfSv66MJj7TGAkbGLr7pVRjRxbMZ00qRtHQ3tFFsZ4sbvJw4GI3pMVv8TVMVcF 7bjVUFBLxgawDp4DetjojJuq31j8cTzucbiAzKVXAv64OCujCyUJ+YfDheWdZSsvoglR8 YtZU8lg3EooOHAECOd5LHUJsk2KiVgJO4i+4g/xtpl+dGFWTku5Ek6IvzB9RBiMhCSMGN dOLJqiLPGgi6SNxDx4Mrv1MfZUp1iC36nndUXht3jAB7xG+/aIx66hkPKBpDLrdsGYw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794591010; 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=vyOFvsV8d2VX9Y9AU60/JXXGfFABnpiO7JsqnlBvuEU=; b=RZFKpgLcOa4TMyhpbMvndIRQW+HB3bF3XyGWSkX2u09nnvQm92zhvl6cqxZkwh+Xbu1+ 3SyysUtcDkT1gaFl6xWRXNOmqUYY088pCI3JkCibJt3eJxse57jUbz0psIETIirECvTJ0 ft/KMaZgB2jjaba7MOB2PjWS/9RO6hbD2mEYopyZ8TfjHuiH/pBnVU4Ts4cczMaPFaf9X ROWEKH230V+ubg1aJFn7rEpmfhTDoraYdvQFLzReqCdJmQAxpQXx4iDzveEkbnMjHKBEa bNtxIN9bXBCSDMqOMZH3P/16AOdtthvTDosPhkqLsQP63kPC0duAs4fIxDpl5U6qHfA== 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=Uw7gmfT8; 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 6F1156070F1A; Fri, 13 Nov 2026 17:30:10 +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=Uw7gmfT8 Received: by smtp.kernel.org (Postfix) with ESMTPSA id CE9A11F000C4; Fri, 13 Nov 2026 17:30:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794591010; bh=vyOFvsV8d2VX9Y9AU60/JXXGfFABnpiO7JsqnlBvuEU=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Uw7gmfT8/kXdRm3nLAkApoYwZioJAFLEksAEE1ref49+N9JSaeez0w4l21BbMI/M4 M0rJlrNJxaFJRvHjp2mhgLIGXhvcBbI2lt9mzLAIVkwlQMezGQH2xwOcdazWHFNOcz tr6iqFsbshgIXF60xou5dM2hrM5avKMQc/NzLfxc= 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 6.12 179/670] net/9p/usbg: fix out_req buffer leak in disable_usb9pfs Date: Fri, 13 Nov 2026 10:45:43 -0500 Message-ID: <20261113153818.106579948@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261113153811.177190860@linuxfoundation.org> References: <20261113153811.177190860@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-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 c58d57232369e..301123725a671 100644 --- a/net/9p/trans_usbg.c +++ b/net/9p/trans_usbg.c @@ -286,7 +286,7 @@ 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