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>
Thu, 16 Nov 2017 21:04:10 +0000 (21:04 +0000)
commit9d6deadc138b48ed54c6b510ebcee419b2f1b8c0
tree240c56fdb5fe4d4f81b26ce0c3030c6bec919f13
parent6cf6945c406d3f6ccaa35c0f8a27f5fa3dd46fb4
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