linux-kernel - [PATCH 2/3] fix the out-of-bounds access of dramsr13

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Message-Id: <1612194898-44732-1-git-send-email-driverfuzzing@gmail.com>
Date:   Mon,  1 Feb 2021 09:54:58 -0600
From:   Wenjia Zhao <driverfuzzing@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     driverfuzzing@...il.com,
        Thomas Winischhofer <thomas@...ischhofer.net>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        dri-devel@...ts.freedesktop.org, linux-fbdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 2/3] fix the out-of-bounds access of dramsr13

Signed-off-by: Wenjia Zhao <driverfuzzing@...il.com>
---
 drivers/video/fbdev/sis/sis_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/video/fbdev/sis/sis_main.c b/drivers/video/fbdev/sis/sis_main.c
index 03c736f..6774252 100644
--- a/drivers/video/fbdev/sis/sis_main.c
+++ b/drivers/video/fbdev/sis/sis_main.c
@@ -4834,7 +4834,7 @@ static int sisfb_post_xgi_ramsize(struct sis_video_info *ivideo)
 	sisfb_post_xgi_delay(ivideo, 1);
 
 	j = (ivideo->chip == XGI_20) ? 5 : 9;
-	k = (ivideo->chip == XGI_20) ? 12 : 4;
+	k = (ivideo->chip == XGI_20) ? 11 : 3;
 	status = -EIO;
 
 	for(i = 0; i < k; i++) {
-- 
2.7.4