/etc/apparmor.d/abstractions/nvidia is in apparmor 2.7.102-0ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 | # vim:syntax=apparmor
# nvidia access requirements
  
  # configuration queries
  capability ipc_lock,
  # device files
  /dev/nvidia0    rw,
  /dev/nvidiactl  rw,
  /proc/interrupts r,
  /proc/sys/vm/max_map_count r,
 |