* Apply "x86/mm: fix use-after-free of vma during userfaultfd fault" to 4.9-stable
@ 2017-11-27 8:03 Eric Biggers
2017-11-27 8:34 ` Greg Kroah-Hartman
2017-11-27 9:09 ` Vlastimil Babka
0 siblings, 2 replies; 3+ messages in thread
From: Eric Biggers @ 2017-11-27 8:03 UTC (permalink / raw)
To: stable, Greg Kroah-Hartman
Cc: Vlastimil Babka, Dmitry Vyukov, Kirill A. Shutemov,
Andrea Arcangeli, Laurent Dufour
Commit cb0631fd3cf9 ("x86/mm: fix use-after-free of vma during userfaultfd
fault") went into mainline without Cc: stable. It appears to be a
use-after-free reachable by unprivileged users -- at least with
CONFIG_USERFAULTFD=y. Can it please be applied to 4.9-stable?
Eric
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Apply "x86/mm: fix use-after-free of vma during userfaultfd fault" to 4.9-stable
2017-11-27 8:03 Apply "x86/mm: fix use-after-free of vma during userfaultfd fault" to 4.9-stable Eric Biggers
@ 2017-11-27 8:34 ` Greg Kroah-Hartman
2017-11-27 9:09 ` Vlastimil Babka
1 sibling, 0 replies; 3+ messages in thread
From: Greg Kroah-Hartman @ 2017-11-27 8:34 UTC (permalink / raw)
To: Eric Biggers
Cc: stable, Vlastimil Babka, Dmitry Vyukov, Kirill A. Shutemov,
Andrea Arcangeli, Laurent Dufour
On Mon, Nov 27, 2017 at 12:03:43AM -0800, Eric Biggers wrote:
> Commit cb0631fd3cf9 ("x86/mm: fix use-after-free of vma during userfaultfd
> fault") went into mainline without Cc: stable. It appears to be a
> use-after-free reachable by unprivileged users -- at least with
> CONFIG_USERFAULTFD=y. Can it please be applied to 4.9-stable?
Now queued up, thanks,
greg k-h
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Apply "x86/mm: fix use-after-free of vma during userfaultfd fault" to 4.9-stable
2017-11-27 8:03 Apply "x86/mm: fix use-after-free of vma during userfaultfd fault" to 4.9-stable Eric Biggers
2017-11-27 8:34 ` Greg Kroah-Hartman
@ 2017-11-27 9:09 ` Vlastimil Babka
1 sibling, 0 replies; 3+ messages in thread
From: Vlastimil Babka @ 2017-11-27 9:09 UTC (permalink / raw)
To: Eric Biggers, stable, Greg Kroah-Hartman
Cc: Dmitry Vyukov, Kirill A. Shutemov, Andrea Arcangeli,
Laurent Dufour
On 11/27/2017 09:03 AM, Eric Biggers wrote:
> Commit cb0631fd3cf9 ("x86/mm: fix use-after-free of vma during userfaultfd
> fault") went into mainline without Cc: stable. It appears to be a
It was a mainline 4.14-rcX regression fix so I didn't CC stable. I
didn't notice that the commit a3c4fb7c9c2ebfd50b8c60f6c069932bb319bc37
that it Fixes did have CC: stable, so I guess my fix should have CC:
stable too. Probably the stable scripts should have picked that anyway,
except I also screwed copy/paste on the Fixes tag, omitting the first
characted of SHA :( (Fixes: 3c4fb7c9c2e ("x86/mm: ...."))
Thanks for noticing!
> use-after-free reachable by unprivileged users -- at least with
> CONFIG_USERFAULTFD=y. Can it please be applied to 4.9-stable?
>
> Eric
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2017-11-27 8:03 Apply "x86/mm: fix use-after-free of vma during userfaultfd fault" to 4.9-stable Eric Biggers
2017-11-27 8:34 ` Greg Kroah-Hartman
2017-11-27 9:09 ` Vlastimil Babka
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