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)
committerPeter Michael Green <plugwash@raspbian.org>
Wed, 7 Feb 2018 23:32:32 +0000 (23:32 +0000)
commit2a116031d7b72e19bfd3c6ae564797423b891dfd
tree5ae6f01032297f3e87285f8279f48e9ad0b3cff6
parent67025b30b5dfa8c9168052cb37f4683c1ef8416d
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