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)
committerAurelien Jarno <aurel32@debian.org>
Fri, 2 Mar 2018 07:52:22 +0000 (07:52 +0000)
commitb593bccf0a323a3725240fe75fd9da72bd9d5fe4
treea37ff144ffa992fc9f08d8f0deed734513c55711
parent64b655ec1310eed5f2bc2e4a4849753e6548d88d
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