linux-hardening - [PATCH 1/2][next] media: staging/intel-ipu3: css: Fix wrong size comparison

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Date:   Thu, 29 Jul 2021 18:20:28 -0500
From:   "Gustavo A. R. Silva" <gustavoars@...nel.org>
To:     linux-kernel@...r.kernel.org
Cc:     Yong Zhi <yong.zhi@...el.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Bingbu Cao <bingbu.cao@...el.com>,
        Tianshu Qiu <tian.shu.qiu@...el.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-media@...r.kernel.org, linux-staging@...ts.linux.dev,
        linux-hardening@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>
Subject: [PATCH 1/2][next] media: staging/intel-ipu3: css: Fix wrong size
 comparison

There is a wrong comparison of the total size of the loaded firmware
css->fw->size with the size of a pointer to struct imgu_fw_header.

Fix this by using the right operand 'struct imgu_fw_header' for
sizeof, instead of 'struct imgu_fw_header *'

Fixes: 09d290f0ba21 ("media: staging/intel-ipu3: css: Add support for firmware management")
Cc: stable@...r.kernel.org
Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
---
 drivers/staging/media/ipu3/ipu3-css-fw.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/media/ipu3/ipu3-css-fw.c b/drivers/staging/media/ipu3/ipu3-css-fw.c
index 45aff76198e2..ab021afff954 100644
--- a/drivers/staging/media/ipu3/ipu3-css-fw.c
+++ b/drivers/staging/media/ipu3/ipu3-css-fw.c
@@ -124,7 +124,7 @@ int imgu_css_fw_init(struct imgu_css *css)
 	/* Check and display fw header info */
 
 	css->fwp = (struct imgu_fw_header *)css->fw->data;
-	if (css->fw->size < sizeof(struct imgu_fw_header *) ||
+	if (css->fw->size < sizeof(struct imgu_fw_header) ||
 	    css->fwp->file_header.h_size != sizeof(struct imgu_fw_bi_file_h))
 		goto bad_fw;
 	if (sizeof(struct imgu_fw_bi_file_h) +
-- 
2.27.0