From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 58BC730FA4 for ; Wed, 20 Sep 2023 12:20:02 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D2154C433C7; Wed, 20 Sep 2023 12:20:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1695212402; bh=/9/hDD6o6n0s7IFMLO5iWWa12FMRlRD2FXX17IBQLco=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gcUBqeSCy1+FQIee1Wrkg/f8HSAKP5HNu/sECn7bM9nuFAi8/A+KS/uvc9/Q7RYcy vHCxJCOihKBg0LJRDglwOmN9cG+HsB1CzxHlTer2Jxgq3U7wnWcwmYRRJCE5vMA9jd OeCsTHvH0rUGMHsIK9v8Xx1wrD8Gq3U1oa8x2nuA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Ma Ke , Li Yang , Sasha Levin Subject: [PATCH 4.19 262/273] usb: gadget: fsl_qe_udc: validate endpoint index for ch9 udc Date: Wed, 20 Sep 2023 13:31:42 +0200 Message-ID: <20230920112854.347747562@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230920112846.440597133@linuxfoundation.org> References: <20230920112846.440597133@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ma Ke [ Upstream commit ce9daa2efc0872a9a68ea51dc8000df05893ef2e ] We should verify the bound of the array to assure that host may not manipulate the index to point past endpoint array. Signed-off-by: Ma Ke Acked-by: Li Yang Link: https://lore.kernel.org/r/20230628081511.186850-1-make_ruc2021@163.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/usb/gadget/udc/fsl_qe_udc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/gadget/udc/fsl_qe_udc.c b/drivers/usb/gadget/udc/fsl_qe_udc.c index 2707be6282988..63109c6e55068 100644 --- a/drivers/usb/gadget/udc/fsl_qe_udc.c +++ b/drivers/usb/gadget/udc/fsl_qe_udc.c @@ -1950,6 +1950,8 @@ static void ch9getstatus(struct qe_udc *udc, u8 request_type, u16 value, } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_ENDPOINT) { /* Get endpoint status */ int pipe = index & USB_ENDPOINT_NUMBER_MASK; + if (pipe >= USB_MAX_ENDPOINTS) + goto stall; struct qe_ep *target_ep = &udc->eps[pipe]; u16 usep; -- 2.40.1