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 F2379C4332F for ; Tue, 8 Nov 2022 14:10:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235173AbiKHOKE (ORCPT ); Tue, 8 Nov 2022 09:10:04 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46224 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235205AbiKHOJ5 (ORCPT ); Tue, 8 Nov 2022 09:09:57 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CA4776379 for ; Tue, 8 Nov 2022 06:09:47 -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 ams.source.kernel.org (Postfix) with ESMTPS id 82C7AB81AF7 for ; Tue, 8 Nov 2022 14:09:45 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id AD6C3C433C1; Tue, 8 Nov 2022 14:09:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1667916584; bh=ZGKCWIJtIoTc/0D3wapeparC4CIoSlk/PVPHoM3wg8k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Z2KsnjLMVro6XM8prjr1aKlTB0c0OigapOEGziwAJMeMyDWFwY/PnVHjZOYgYsz/d CnBWlrUdKNwOrZFVzDl9RkLpmDrJuK9xcwtq2s0BQcfwtMKr1PqGH7kfbQsq3uUncY tbS4l3fF7Jk4JN2Cz8e5VtgHSrK4gPHRdL793JZQ= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Hans Verkuil , Mauro Carvalho Chehab , Sasha Levin Subject: [PATCH 6.0 069/197] media: s5p_cec: limit msg.len to CEC_MAX_MSG_SIZE Date: Tue, 8 Nov 2022 14:38:27 +0100 Message-Id: <20221108133357.991746769@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221108133354.787209461@linuxfoundation.org> References: <20221108133354.787209461@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Hans Verkuil [ Upstream commit 93f65ce036863893c164ca410938e0968964b26c ] I expect that the hardware will have limited this to 16, but just in case it hasn't, check for this corner case. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- drivers/media/cec/platform/s5p/s5p_cec.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/media/cec/platform/s5p/s5p_cec.c b/drivers/media/cec/platform/s5p/s5p_cec.c index ce9a9d922f11..0a30e7acdc10 100644 --- a/drivers/media/cec/platform/s5p/s5p_cec.c +++ b/drivers/media/cec/platform/s5p/s5p_cec.c @@ -115,6 +115,8 @@ static irqreturn_t s5p_cec_irq_handler(int irq, void *priv) dev_dbg(cec->dev, "Buffer overrun (worker did not process previous message)\n"); cec->rx = STATE_BUSY; cec->msg.len = status >> 24; + if (cec->msg.len > CEC_MAX_MSG_SIZE) + cec->msg.len = CEC_MAX_MSG_SIZE; cec->msg.rx_status = CEC_RX_STATUS_OK; s5p_cec_get_rx_buf(cec, cec->msg.len, cec->msg.msg); -- 2.35.1