lkml.org 
[lkml]   [2017]   [Oct]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subjectnet: lapbether: fix double free
Date
The function netdev_priv() returns the private data of the device. The
memory to store the private data is allocated in alloc_netdev() and is
released in netdev_free(). Calling kfree() on the return value of
netdev_priv() after netdev_free() results in a double free bug.

Signed-off-by: Pan Bian <bianpan2016@163.com>
---
drivers/net/wan/lapbether.c | 1 -
1 file changed, 1 deletion(-)

diff --git a/drivers/net/wan/lapbether.c b/drivers/net/wan/lapbether.c
index 63f7490..0e3f8ed 100644
--- a/drivers/net/wan/lapbether.c
+++ b/drivers/net/wan/lapbether.c
@@ -346,7 +346,6 @@ static int lapbeth_new_device(struct net_device *dev)
fail:
dev_put(dev);
free_netdev(ndev);
- kfree(lapbeth);
goto out;
}

--
1.9.1

\
 
 \ /
  Last update: 2017-10-29 14:58    [W:1.662 / U:0.544 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site