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From: "Gustavo A. R. Silva" <gustavoars@kernel.org>
To: linux-kernel@vger.kernel.org
Cc: Yong Zhi <yong.zhi@intel.com>,
	Sakari Ailus <sakari.ailus@linux.intel.com>,
	Bingbu Cao <bingbu.cao@intel.com>,
	Tianshu Qiu <tian.shu.qiu@intel.com>,
	Mauro Carvalho Chehab <mchehab@kernel.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	linux-media@vger.kernel.org, linux-staging@lists.linux.dev,
	linux-hardening@vger.kernel.org,
	"Gustavo A. R. Silva" <gustavoars@kernel.org>
Subject: [PATCH 1/2][next] media: staging/intel-ipu3: css: Fix wrong size comparison
Date: Thu, 29 Jul 2021 18:20:28 -0500	[thread overview]
Message-ID: <19339bd9b40f224cbd80a8f6bd990750fcf2d446.1627600430.git.gustavoars@kernel.org> (raw)
In-Reply-To: <cover.1627600430.git.gustavoars@kernel.org>

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@vger.kernel.org
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.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


  reply	other threads:[~2021-07-29 23:17 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-29 23:19 [PATCH 0/2][next] Fix size comparison bug and use flexible array Gustavo A. R. Silva
2021-07-29 23:20 ` Gustavo A. R. Silva [this message]
2021-07-29 23:22 ` [PATCH 2/2][next] media: staging/intel-ipu3: css: Replace one-element array and use struct_size() helper Gustavo A. R. Silva
2021-07-30  7:49   ` Dan Carpenter
2021-07-30  8:40     ` Gustavo A. R. Silva
2021-08-02  6:00       ` Sakari Ailus

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