fanotify: Taint on use of FANOTIFY_ACCESS_PERMISSIONS
authorBen Hutchings <ben@decadent.org.uk>
Wed, 13 Jul 2016 00:37:22 +0000 (01:37 +0100)
committerBen Hutchings <ben@decadent.org.uk>
Wed, 21 Aug 2019 12:48:11 +0000 (13:48 +0100)
commit5fa215b5dba5798e6d55ffe26501f1d59b719791
tree2981381abc405809926b282416cfcc601ae6b650
parenta05e4bf6dd0abc29906ae4a94bd78db6ba456add
fanotify: Taint on use of FANOTIFY_ACCESS_PERMISSIONS

Various free and proprietary AV products use this feature and users
apparently want it.  But punting access checks to userland seems like
an easy way to deadlock the system, and there will be nothing we can
do about that.  So warn and taint the kernel if this feature is
actually used.

Gbp-Pq: Topic debian
Gbp-Pq: Name fanotify-taint-on-use-of-fanotify_access_permissions.patch
fs/notify/fanotify/fanotify_user.c