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Jan Kara 17ad86d8c1 inotify: Avoid reporting event with invalid wd ... commit c915d8f591 upstream. When inotify_freeing_mark() races with inotify_handle_inode_event() it can happen that inotify_handle_inode_event() sees that i_mark->wd got already reset to -1 and reports this value to userspace which can confuse the inotify listener. Avoid the problem by validating that wd is sensible (and pretend the mark got removed before the event got generated otherwise). CC: stable@vger.kernel.org Fixes: 7e790dd5fc ("inotify: fix error paths in inotify_update_watch") Message-Id: <20230424163219.9250-1-jack@suse.cz> Reported-by: syzbot+4a06d4373fd52f0b2f9c@syzkaller.appspotmail.com Reviewed-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		History 2023-05-17 11:50:22 +02:00
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dnotify	\n	2020-12-17 10:56:27 -08:00
fanotify	fanotify: Fix stale file descriptor in copy_event_to_user()	2022-02-05 12:38:59 +01:00
inotify	inotify: Avoid reporting event with invalid wd	2023-05-17 11:50:22 +02:00
fdinfo.c	inotify: show inotify mask flags in proc fdinfo	2022-06-09 10:22:49 +02:00
fdinfo.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
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
Kconfig	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
mark.c	fsnotify: fix wrong lockdep annotations	2022-06-09 10:22:50 +02:00
notification.c	fsnotify: use hash table for faster events merge	2021-03-16 16:37:51 +01:00