linux

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Files

Jan Kara b1da6a5187 fsnotify: Fix NULL ptr deref in fanotify_get_fsid()

fanotify_get_fsid() is reading mark->connector->fsid under srcu. It can
happen that it sees mark not fully initialized or mark that is already
detached from the object list. In these cases mark->connector
can be NULL leading to NULL ptr dereference. Fix the problem by
being careful when reading mark->connector and check it for being NULL.
Also use WRITE_ONCE when writing the mark just to prevent compiler from
doing something stupid.

Reported-by: syzbot+15927486a4f1bfcbaf91@syzkaller.appspotmail.com
Fixes: 77115225ac ("fanotify: cache fsid in fsnotify_mark_connector")
Signed-off-by: Jan Kara <jack@suse.cz>

2019-04-28 22:14:50 +02:00

dnotify

Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace

2018-08-21 13:47:29 -07:00

fanotify

fsnotify: Fix NULL ptr deref in fanotify_get_fsid()

2019-04-28 22:14:50 +02:00

inotify

inotify: Fix fsnotify_mark refcount leak in inotify_update_existing_watch()

2019-03-11 10:13:17 +01:00

fdinfo.c

fsnotify/fdinfo: include fdinfo.h for inotify_show_fdinfo()