linux-kernel - [RFC PATCH v2 01/13] media: mtk-vcodec: vdec: fix incorrect pointer dereference

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20190906115513.159705-2-acourbot@chromium.org>
Date:   Fri,  6 Sep 2019 20:55:01 +0900
From:   Alexandre Courbot <acourbot@...omium.org>
To:     Yunfei Dong <yunfei.dong@...iatek.com>,
        Tiffany Lin <tiffany.lin@...iatek.com>,
        Andrew-CT Chen <andrew-ct.chen@...iatek.com>,
        Hans Verkuil <hans.verkuil@...co.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>
Cc:     linux-media@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        linux-kernel@...r.kernel.org,
        Alexandre Courbot <acourbot@...omium.org>
Subject: [RFC PATCH v2 01/13] media: mtk-vcodec: vdec: fix incorrect pointer dereference

From: Yunfei Dong <yunfei.dong@...iatek.com>

mtk_q_data::fmt is actually a pointer and must be dereferenced as such.
This went under the radar because mtk_v4l2_debug() evaluates to nothing
unless DEBUG is defined.

Signed-off-by: Yunfei Dong <yunfei.dong@...iatek.com>
[acourbot: split into its own commit]
Signed-off-by: Alexandre Courbot <acourbot@...omium.org>
---
 drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c
index 26a55c3e807e..653f111532ab 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c
@@ -284,7 +284,7 @@ static void mtk_vdec_update_fmt(struct mtk_vcodec_ctx *ctx,
 		fmt = &mtk_video_formats[k];
 		if (fmt->fourcc == pixelformat) {
 			mtk_v4l2_debug(1, "Update cap fourcc(%d -> %d)",
-				dst_q_data->fmt.fourcc, pixelformat);
+				dst_q_data->fmt->fourcc, pixelformat);
 			dst_q_data->fmt = fmt;
 			return;
 		}
-- 
2.23.0.187.g17f5b7556c-goog