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| author | Amit Shah <amit.shah@redhat.com> | 2013-08-07 15:54:17 +0930 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2013-08-09 13:02:16 +0930 |
| commit | 3b868a4073cdedf395f26d843874414e0e0e9cfd (patch) | |
| tree | c61396970bcaa517abe6511dda51914737a8dfd3 | |
| parent | 11489736177c5930514482b4db7af862d945335d (diff) | |
| download | op-kernel-dev-3b868a4073cdedf395f26d843874414e0e0e9cfd.zip op-kernel-dev-3b868a4073cdedf395f26d843874414e0e0e9cfd.tar.gz | |
virtio: console: prevent use-after-free of port name in port unplug
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>
| -rw-r--r-- | drivers/char/virtio_console.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index d0e75aa..b79cf3e 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virtio_console.c @@ -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 |
