lkml.org 
[lkml]   [2020]   [Mar]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] mfd: aat2870: Use scnprintf() for avoiding potential buffer overflow
Date
There is still one call of sprintf() without checking the proper
buffer overflow in aat2870_dump_reg(). Replace it with scnprintf()
call for covering that.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
drivers/mfd/aat2870-core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mfd/aat2870-core.c b/drivers/mfd/aat2870-core.c
index 78ee4b28fca2..a17cf759739d 100644
--- a/drivers/mfd/aat2870-core.c
+++ b/drivers/mfd/aat2870-core.c
@@ -221,7 +221,7 @@ static ssize_t aat2870_dump_reg(struct aat2870_data *aat2870, char *buf)

count += sprintf(buf, "aat2870 registers\n");
for (addr = 0; addr < AAT2870_REG_NUM; addr++) {
- count += sprintf(buf + count, "0x%02x: ", addr);
+ count += snprintf(buf + count, PAGE_SIZE - count, "0x%02x: ", addr);
if (count >= PAGE_SIZE - 1)
break;

--
2.16.4
\
 
 \ /
  Last update: 2020-03-11 08:48    [W:0.033 / U:2.636 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site