Messages in this thread |  | | Date | Sun, 25 Sep 2022 22:52:56 +0900 | Subject | Re: [PATCH] kernfs: fix UAF race condition in __kernfs_remove() | From | Tetsuo Handa <> |
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On 2022/09/25 22:40, Greg Kroah-Hartman wrote: > On Sun, Sep 25, 2022 at 10:20:27PM +0900, Tetsuo Handa wrote: >> On 2022/09/25 22:13, Greg Kroah-Hartman wrote: >>> Isn't this already handled by: >>> https://lore.kernel.org/r/20220913121723.691454-1-lk@c--e.de >>> >>> that will show up in the next linux-next tree. >> >> Oh, I didn't know that patch. >> >> But is that patch complete, for there are three __kernfs_remove() callers? >> > > syzbot seems to think it works :)
syzbot's reproducer tested only kernfs_remove_by_name_ns() case. I'm not sure whether e.g. __kernfs_remove() from kernfs_remove() is safe.
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