Here, dvb_free_device will free dvb_device. dvb_frontend_invoke_release
is using dvb_device after free.
Signed-off-by: Arvind Yadav <arvind.yadav...@gmail.com>
---
This bug report by Andrey Konovalov (usb/media/dtt200u: use-after-free
in __dvb_frontend_free).
drivers/media/dvb-core/dvb_frontend.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/media/dvb-core/dvb_frontend.c
b/drivers/media/dvb-core/dvb_frontend.c
index 2fcba16..7f1ef12 100644
--- a/drivers/media/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb-core/dvb_frontend.c
@@ -147,10 +147,10 @@ static void dvb_frontend_free(struct kref *ref)
container_of(ref, struct dvb_frontend, refcount);
struct dvb_frontend_private *fepriv = fe->frontend_priv;
- dvb_free_device(fepriv->dvbdev);
-
dvb_frontend_invoke_release(fe, fe->ops.release);
+ dvb_free_device(fepriv->dvbdev);
+
kfree(fepriv);
}
--
1.9.1
