From 1212d3b7d89a15aaf831021419ce3404b76a2efd Mon Sep 17 00:00:00 2001
From: SPRESENSE <41312067+SPRESENSE@users.noreply.github.com>
Date: Thu, 3 Feb 2022 10:12:26 +0900
Subject: [PATCH] drivers/video: Fix multiplication overflow

Add cast to uint32_t type to avoid multiplication overflow.
---
 drivers/video/video.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/video/video.c b/drivers/video/video.c
index f4a3dfbfd4..ac3fd47687 100644
--- a/drivers/video/video.c
+++ b/drivers/video/video.c
@@ -626,11 +626,13 @@ static void get_clipped_format(uint8_t              nr_fmt,
                  &fmt[VIDEO_FMT_SUB],
                  sizeof(video_format_t));
 
-          c_fmt[VIDEO_FMT_SUB].width *= clip->width;
-          c_fmt[VIDEO_FMT_SUB].width /= fmt[VIDEO_FMT_MAIN].width;
+          c_fmt[VIDEO_FMT_SUB].width
+            = (uint32_t)c_fmt[VIDEO_FMT_SUB].width
+              * clip->width / fmt[VIDEO_FMT_MAIN].width;
 
-          c_fmt[VIDEO_FMT_SUB].height *= clip->height;
-          c_fmt[VIDEO_FMT_SUB].height /= fmt[VIDEO_FMT_MAIN].height;
+          c_fmt[VIDEO_FMT_SUB].height
+            = (uint32_t)c_fmt[VIDEO_FMT_SUB].height
+              * clip->height / fmt[VIDEO_FMT_MAIN].height;
         }
     }
   else