From patchwork Thu Nov 11 08:06:11 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe JAILLET X-Patchwork-Id: 78359 X-Patchwork-Delegate: laurent.pinchart@ideasonboard.com Received: from vger.kernel.org ([23.128.96.18]) by www.linuxtv.org with esmtp (Exim 4.92) (envelope-from ) id 1ml56D-008OFL-MN; Thu, 11 Nov 2021 08:06:21 +0000 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230400AbhKKIJF (ORCPT + 1 other); Thu, 11 Nov 2021 03:09:05 -0500 Received: from smtp02.smtpout.orange.fr ([80.12.242.124]:55339 "EHLO smtp.smtpout.orange.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229543AbhKKIJD (ORCPT ); Thu, 11 Nov 2021 03:09:03 -0500 Received: from pop-os.home ([86.243.171.122]) by smtp.orange.fr with ESMTPA id l565mStOmBazol565mZRSP; Thu, 11 Nov 2021 09:06:14 +0100 X-ME-Helo: pop-os.home X-ME-Auth: YWZlNiIxYWMyZDliZWIzOTcwYTEyYzlhMmU3ZiQ1M2U2MzfzZDfyZTMxZTBkMTYyNDBjNDJlZmQ3ZQ== X-ME-Date: Thu, 11 Nov 2021 09:06:14 +0100 X-ME-IP: 86.243.171.122 From: Christophe JAILLET To: laurent.pinchart@ideasonboard.com, mchehab@kernel.org, ribalda@chromium.org, hverkuil-cisco@xs4all.nl Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org, Christophe JAILLET Subject: [PATCH] media: uvcvideo: Fix a memory leak in an error handling path of 'uvc_ioctl_ctrl_map()' Date: Thu, 11 Nov 2021 09:06:11 +0100 Message-Id: <95f3fd02313ff41d6808b8e1f20e0c582f46edc8.1636617903.git.christophe.jaillet@wanadoo.fr> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-LSpam-Score: -2.4 (--) X-LSpam-Report: No, score=-2.4 required=5.0 tests=BAYES_00=-1.9,FREEMAIL_FORGED_FROMDOMAIN=0.001,FREEMAIL_FROM=0.001,HEADER_FROM_DIFFERENT_DOMAINS=0.5,MAILING_LIST_MULTI=-1 autolearn=ham autolearn_force=no If 'map->name' can't be allocated, 'map' must be released before returning. Fixes: 70fa906d6fce ("media: uvcvideo: Use control names from framework") Signed-off-by: Christophe JAILLET --- drivers/media/usb/uvc/uvc_v4l2.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c index f4e4aff8ddf7..5aa76a9a6080 100644 --- a/drivers/media/usb/uvc/uvc_v4l2.c +++ b/drivers/media/usb/uvc/uvc_v4l2.c @@ -44,8 +44,10 @@ static int uvc_ioctl_ctrl_map(struct uvc_video_chain *chain, if (v4l2_ctrl_get_name(map->id) == NULL) { map->name = kmemdup(xmap->name, sizeof(xmap->name), GFP_KERNEL); - if (!map->name) + if (!map->name) { + kfree(map); return -ENOMEM; + } } memcpy(map->entity, xmap->entity, sizeof(map->entity)); map->selector = xmap->selector;