From mboxrd@z Thu Jan 1 00:00:00 1970 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 40DDBC7EE39 for ; Fri, 3 Mar 2023 21:56:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233157AbjCCV4E (ORCPT ); Fri, 3 Mar 2023 16:56:04 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48538 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233312AbjCCVzU (ORCPT ); Fri, 3 Mar 2023 16:55:20 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A35A36B33E; Fri, 3 Mar 2023 13:48:55 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id AA15461921; Fri, 3 Mar 2023 21:48:54 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B3AC0C4339C; Fri, 3 Mar 2023 21:48:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1677880134; bh=K320IATZViZ6p2z8opWgQ4B3i0XStvbTQyf1uRhNInQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VHTt3TOdFA7G3QjYYnls5FBPtA1eb/XJ7rc7tdrmEePs9bkbuTTWdfH6VvSYvI+Ii 5Y7EHsYVt7AG+84ZEqpbhxVjrtzSXSaEgi3CWO8nbxaBsBgEj6epfi+fvW5vxBHuLr aa/2yrIAwnXmPzsfLf8fBmZKTzdv3pZUqUrgCoiC2Jm3WCfgehTndxRVzAwidfo+oH QIa3Qz0+dvByp69K1jkvqYpThOZIPaYo/MsszwSXVtzEkTgfvJY1a/CYhUOUm2BNnK 64ocGseNPTMl4YGpj+WT+rPyURQTMAuAEQmkjTmypqou98RUCv9if+PoM6unkkPcL6 PxANmWLg4FWVA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Ricardo Ribalda , syzbot , Laurent Pinchart , Sasha Levin , mchehab@kernel.org, linux-media@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 02/16] media: uvcvideo: Handle cameras with invalid descriptors Date: Fri, 3 Mar 2023 16:48:35 -0500 Message-Id: <20230303214849.1454002-2-sashal@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230303214849.1454002-1-sashal@kernel.org> References: <20230303214849.1454002-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Ricardo Ribalda [ Upstream commit 41ddb251c68ac75c101d3a50a68c4629c9055e4c ] If the source entity does not contain any pads, do not create a link. Reported-by: syzbot Signed-off-by: Ricardo Ribalda Reviewed-by: Laurent Pinchart Signed-off-by: Laurent Pinchart Signed-off-by: Sasha Levin --- drivers/media/usb/uvc/uvc_entity.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/usb/uvc/uvc_entity.c b/drivers/media/usb/uvc/uvc_entity.c index f2457953f27c6..0d5aaaa7e2d96 100644 --- a/drivers/media/usb/uvc/uvc_entity.c +++ b/drivers/media/usb/uvc/uvc_entity.c @@ -42,7 +42,7 @@ static int uvc_mc_create_links(struct uvc_video_chain *chain, continue; remote = uvc_entity_by_id(chain->dev, entity->baSourceID[i]); - if (remote == NULL) + if (remote == NULL || remote->num_pads == 0) return -EINVAL; source = (UVC_ENTITY_TYPE(remote) == UVC_TT_STREAMING) -- 2.39.2