Messages in this thread | | | Date | Wed, 03 Aug 2022 09:34:10 +0530 | From | Siddh Raman Pant <> | Subject | Re: [syzbot] KASAN: use-after-free Read in post_one_notification |
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On Wed, 03 Aug 2022 03:57:19 +0530 Eric Biggers <ebiggers@kernel.org> wrote: > It appears this was already fixed, so no need for any more activity on this bug: > > #syz fix: watchqueue: make sure to serialize 'wqueue->defunct' properly > > - Eric
It doesn't address the dangling pointer remaining in the watch_queue, which was the root cause of this crash. The use-after-free happened because the pipe was freed but a dangling pointer of it remained in a watch_queue, and an attempt to dereference it was there.
Thanks, Siddh
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