lkml.org 
[lkml]   [2019]   [Dec]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 2/2] i2c: Fix a potential use after free
Date
Free the adap structure only after we are done using it.
This patch just moves the put_device() down a bit to avoid the
use after free.

Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
---
drivers/i2c/i2c-core-base.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c
index 9f8dcd3..160d43e 100644
--- a/drivers/i2c/i2c-core-base.c
+++ b/drivers/i2c/i2c-core-base.c
@@ -2301,8 +2301,8 @@ void i2c_put_adapter(struct i2c_adapter *adap)
if (!adap)
return;

- put_device(&adap->dev);
module_put(adap->owner);
+ put_device(&adap->dev);
}
EXPORT_SYMBOL(i2c_put_adapter);

--
2.7.4
\
 
 \ /
  Last update: 2019-12-27 10:35    [W:0.040 / U:7.064 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site