From patchwork Mon Jun 24 01:53:13 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ma Ke X-Patchwork-Id: 13708833 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id ECE4BC27C4F for ; Mon, 24 Jun 2024 01:53:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=mnX5WflC/1Y3qZQFRWu6lbnsIS01XiZWjYceCVv4lUg=; b=wR2uOKpGDbX5uJKmNyjvxKgDYS zWfaYh8i/bGVJwS0JHsiNW0dRUH/9nucoPD8tOYqbxetk8g7QUA5MxZyZwCzjqWfjP/7GWfyTyHVc 8zZG1foslrUOxzKAoGZve9fpfOrWmf2VkOTsUTgNMQCrcX1EZ9zZZnBJUfE9ZfDJTdAr5fNBp7V37 aFqb+wMbAEKvWQQlOKn8Tiyiq8rPNd9Mh8i5o2oQfa9tqTK3qvgMUYh3cg+mY8HL6mMiga1fK5H8+ 1kHYJQf4UCEGPMvZFRP5e86iWJuaHxBnFK0ptHep42+cafDexW5MltSCUcsqqT+kcSyeS6B0b5Irw iEXhnlZQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sLYtr-0000000FEAe-0hIe; Mon, 24 Jun 2024 01:53:43 +0000 Received: from smtp81.cstnet.cn ([159.226.251.81] helo=cstnet.cn) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sLYtl-0000000FE9r-3jEF for linux-arm-kernel@lists.infradead.org; Mon, 24 Jun 2024 01:53:40 +0000 Received: from icess-ProLiant-DL380-Gen10.. (unknown [183.174.60.14]) by APP-03 (Coremail) with SMTP id rQCowACnrpqL0XhmqEYjEg--.64990S2; Mon, 24 Jun 2024 09:53:22 +0800 (CST) From: Ma Ke To: neal_liu@aspeedtech.com, gregkh@linuxfoundation.org, joel@jms.id.au, andrew@codeconstruct.com.au Cc: linux-aspeed@lists.ozlabs.org, linux-usb@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Ma Ke Subject: [PATCH v2] usb: gadget: aspeed_udc: validate endpoint index for ast udc Date: Mon, 24 Jun 2024 09:53:13 +0800 Message-Id: <20240624015314.2249128-1-make24@iscas.ac.cn> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-CM-TRANSID: rQCowACnrpqL0XhmqEYjEg--.64990S2 X-Coremail-Antispam: 1UD129KBjvdXoWruFy7urW5GFW3Zw1UJr4xWFg_yoW3ZrcE93 WUur43Wr12g3yIqr1UZ34a9ry29a4kW3WkuF1DtryayFyUXa4xZw18WrWkJw4UZF47uF9x C3yDK343C34FqjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUb4kFF20E14v26r4j6ryUM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6r106r1rM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_Gr0_Xr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr0_ Cr1l84ACjcxK6I8E87Iv67AKxVW8Jr0_Cr1UM28EF7xvwVC2z280aVCY1x0267AKxVW8Jr 0_Cr1UM2vYz4IE04k24VAvwVAKI4IrM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVAC Y4xI64kE6c02F40Ex7xfMcIj6xIIjxv20xvE14v26r1j6r18McIj6I8E87Iv67AKxVWUJV W8JwAm72CE4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI2 0VAGYxC7MxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMI8I3I0E5I8CrV AFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxVWUtVW8ZwCI c40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1j6r1xMIIF0xvE2Ix0cI8IcVCY1x0267 AKxVWUJVW8JwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Jr0_ Gr1lIxAIcVC2z280aVCY1x0267AKxVWUJVW8JbIYCTnIWIevJa73UjIFyTuYvjfUOlksUU UUU X-Originating-IP: [183.174.60.14] X-CM-SenderInfo: ppdnvj2u6l2u1dvotugofq/ X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240623_185338_529412_2F53F16B X-CRM114-Status: UNSURE ( 7.96 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org We should verify the bound of the array to assure that host may not manipulate the index to point past endpoint array. Found by static analysis. Signed-off-by: Ma Ke Acked-by: Andrew Jeffery --- drivers/usb/gadget/udc/aspeed_udc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/gadget/udc/aspeed_udc.c b/drivers/usb/gadget/udc/aspeed_udc.c index 3916c8e2ba01..d972ef4644bc 100644 --- a/drivers/usb/gadget/udc/aspeed_udc.c +++ b/drivers/usb/gadget/udc/aspeed_udc.c @@ -1009,6 +1009,8 @@ static void ast_udc_getstatus(struct ast_udc_dev *udc) break; case USB_RECIP_ENDPOINT: epnum = crq.wIndex & USB_ENDPOINT_NUMBER_MASK; + if (epnum >= AST_UDC_NUM_ENDPOINTS) + goto stall; status = udc->ep[epnum].stopped; break; default: