fanotify: Fix use after free in mask checking
We cannot use the event structure returned from fsnotify_add_notify_event() because that event can be freed by the time that function returns. Use the mask argument passed into the event handler directly instead. This also fixes a possible problem when we could unnecessarily wait for permission response for a normal fanotify event which got merged with a permission event. We also disallow merging of permission event with any other event so that we know the permission event which we just created is the one on which we should wait for permission response. Reported-and-tested-by:Jiri Kosina <jkosina@suse.cz> Reported-and-tested-by:
Dave Jones <davej@fedoraproject.org> Signed-off-by:
Jan Kara <jack@suse.cz>
parent
0e47c969
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