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 X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 579D5C3A5A2 for ; Sun, 22 Sep 2019 19:35:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 29C23206B6 for ; Sun, 22 Sep 2019 19:35:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569180910; bh=hjmpnAIp7H1b+RS9Gb7JtQbLwf8dNp2GOvMS39yQNrM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ms6IZjVJFpsmAIHwonmEQ8bK3cSNSenUVEv4co9Qdr8WvGWPKDJN7w8S7MjwOAOh5 uQDpba8KxiGZuHdTaAEaPYqctY0TCotp597r/XiSfcQlKp/NZljTAAZt4tmQucjo8g zIv7SZjzOArnF/k8gL5jAmr+5aIRdXdTlz/Eyl1o= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390370AbfIVSqy (ORCPT ); Sun, 22 Sep 2019 14:46:54 -0400 Received: from mail.kernel.org ([198.145.29.99]:43114 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390231AbfIVSqs (ORCPT ); Sun, 22 Sep 2019 14:46:48 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E4E1D214AF; Sun, 22 Sep 2019 18:46:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569178007; bh=hjmpnAIp7H1b+RS9Gb7JtQbLwf8dNp2GOvMS39yQNrM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=yMlPQlGpuQkKFlSk4PWxd3rDABJ1mbC4hd0kVwXw7rW+e3WxpU68CHKTwNTiQm+5J iXsO/z/2rPl3UCwGP0LUdiMDIQ0UvBRYw8MftfFctVbe/yPge8pnw/j7/3QWxwLXPg nV11/M0CnF+PecbyayXhrPzkhKQuolbhUs6kVQTw= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Hans Verkuil , syzbot+79d18aac4bf1770dd050@syzkaller.appspotmail.com, Mauro Carvalho Chehab , Sasha Levin , linux-media@vger.kernel.org Subject: [PATCH AUTOSEL 5.3 095/203] media: hdpvr: add terminating 0 at end of string Date: Sun, 22 Sep 2019 14:42:01 -0400 Message-Id: <20190922184350.30563-95-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190922184350.30563-1-sashal@kernel.org> References: <20190922184350.30563-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Hans Verkuil [ Upstream commit 8b8900b729e4f31f12ac1127bde137c775c327e6 ] dev->usbc_buf was passed as argument for %s, but it was not safeguarded by a terminating 0. This caused this syzbot issue: https://syzkaller.appspot.com/bug?extid=79d18aac4bf1770dd050 Reported-and-tested-by: syzbot+79d18aac4bf1770dd050@syzkaller.appspotmail.com Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- drivers/media/usb/hdpvr/hdpvr-core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/media/usb/hdpvr/hdpvr-core.c b/drivers/media/usb/hdpvr/hdpvr-core.c index a0905c81d2cb2..b75c18a012a73 100644 --- a/drivers/media/usb/hdpvr/hdpvr-core.c +++ b/drivers/media/usb/hdpvr/hdpvr-core.c @@ -137,6 +137,7 @@ static int device_authorization(struct hdpvr_device *dev) dev->fw_ver = dev->usbc_buf[1]; + dev->usbc_buf[46] = '\0'; v4l2_info(&dev->v4l2_dev, "firmware version 0x%x dated %s\n", dev->fw_ver, &dev->usbc_buf[2]); -- 2.20.1