FEX-Emu/linux
1
0
Fork 0
mirror of https://github.com/FEX-Emu/linux.git synced 2025-01-19 08:11:52 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

virtio: console: prevent use-after-free of port name in port unplug

Browse Source 
Remove the debugfs path before freeing port->name, to prevent a possible
use-after-free.

Reported-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Amit Shah 2013-08-07 15:54:17 +09:30 committed by Rusty Russell
parent 1148973617
commit 3b868a4073
1 changed files with 1 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/char/virtio_console.c
View File

@ -1591,9 +1591,8 @@ static void unplug_port(struct port *port)
device_destroy(pdrvdata.class, port->dev->devt);
cdev_del(port->cdev);
kfree(port->name);
debugfs_remove(port->debugfs_file);
kfree(port->name);
/*
* Locks around here are not necessary - a port can't be