Description: slab-out-of-bounds in fbcon
References:
 https://www.openwall.com/lists/oss-security/2020/09/15/2
Notes:
Bugs:
upstream: pending [50145474f6ef4a9c19205b173da6264a644c7489]
4.19-upstream-stable: needed
4.9-upstream-stable: needed
sid: needed
4.19-buster-security: needed
4.9-stretch-security: needed