Description: n_tty_receive_buf_common use-after-free
References:
 https://bugzilla.kernel.org/show_bug.cgi?id=206361
 https://lore.kernel.org/lkml/20200210081131.23572-2-jslaby@suse.cz/
Notes:
Bugs:
upstream: released (5.6-rc3) [07e6124a1a46b4b5a9b3cacc0c306b50da87abf5]
4.19-upstream-stable: released (4.19.109) [31559b59040fc0e6ad363642112d4eb03ad4ebb7]
4.9-upstream-stable: released (4.9.216) [290a9381ccc16131c6ccc19940589141985db6b1]
3.16-upstream-stable:
sid: pending (5.5.13-1)
4.19-buster-security: needed
4.9-stretch-security: needed
3.16-jessie-security: