The xc2028_set_config function in drivers/media/tuners/tuner-xc2028.c in the Linux kernel before 4.6 allows local users to gain privileges or cause a denial of service (use-after-free) via vectors involving omission of the firmware name from a certain data structure.
https://usn.ubuntu.com/3798-2/
https://usn.ubuntu.com/3798-1/
https://github.com/torvalds/linux/commit/8dfbcc4351a0b6d2f2d77f367552f48ffefafe18
https://access.redhat.com/errata/RHSA-2019:1190
https://access.redhat.com/errata/RHSA-2019:1170
https://access.redhat.com/errata/RHSA-2018:1062
https://access.redhat.com/errata/RHSA-2018:0676
http://www.securityfocus.com/bid/94201