Dan Carpenter 60765e43e4 fanotify: Fix stale file descriptor in copy_event_to_user() ... commit ee12595147 upstream. This code calls fd_install() which gives the userspace access to the fd. Then if copy_info_records_to_user() fails it calls put_unused_fd(fd) but that will not release it and leads to a stale entry in the file descriptor table. Generally you can't trust the fd after a call to fd_install(). The fix is to delay the fd_install() until everything else has succeeded. Fortunately it requires CAP_SYS_ADMIN to reach this code so the security impact is less. Fixes: f644bc449b ("fanotify: fix copy_event_to_user() fid error clean up") Link: https://lore.kernel.org/r/20220128195656.GA26981@kili Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Mathias Krause <minipli@grsecurity.net> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-02-05 12:38:59 +01:00
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dnotify	…
fanotify	fanotify: Fix stale file descriptor in copy_event_to_user()	2022-02-05 12:38:59 +01:00
inotify	ucounts: add missing data type changes	2021-08-09 15:45:02 -05:00
Kconfig	…
Makefile	…
fdinfo.c	fanotify: fix permission model of unprivileged group	2021-05-25 12:21:14 +02:00
fdinfo.h	…
fsnotify.c	fsnotify: count all objects with attached connectors	2021-08-11 13:50:48 +02:00
fsnotify.h	fsnotify: count all objects with attached connectors	2021-08-11 13:50:48 +02:00
group.c	fanotify: configurable limits via sysfs	2021-03-16 16:49:31 +01:00
mark.c	fsnotify: fix sb_connectors leak	2021-09-10 09:46:48 -07:00
notification.c	fsnotify: use hash table for faster events merge	2021-03-16 16:37:51 +01:00