[PATCH 4.9 65/77] media: uvcvideo: Prevent heap overflow when accessing mapped controls

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Guenter Roeck commit 7e09f7d5c790278ab98e5f2c22307ebe8ad6e8ba upstream. The size of uvc_control_mapping is user controlled leading to a potential heap overflow in the uvc

[PATCH 4.9 65/77] media: uvcvideo: Prevent heap overflow when accessing mapped controls

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Guenter Roeck commit 7e09f7d5c790278ab98e5f2c22307ebe8ad6e8ba upstream. The size of uvc_control_mapping is user controlled leading to a potential heap overflow in the uvc driver. This adds a