Am Dienstag, 22. August 2017, 08:33:15 CEST schrieb Herbert Xu:
Hi Herbert,
> On Thu, Aug 10, 2017 at 08:06:18AM +0200, Stephan Müller wrote:
> > Hi Herbert,
> >
> > I found that issue while playing around with edge conditions in my
> > algif_akcipher implementation. This issue only manifests in a
> > segmentation violation on 32 bit machines and with an SGL where each
> > SG points to one byte. SGLs with larger buffers seem to be not
> > affected by this issue.
> >
> > Yet this access-after-unmap should be a candidate for stable, IMHO.
>
> Good catch. Thanks!
>
> Fixes: 4816c9406430 ("lib/mpi: Fix SG miter leak")
> Cc: <stable@xxxxxxxxxxxxxxx>
Just to confirm: stable is not CCed in this email -- did you send it
separately to stable? (dto for "[PATCH v4] crypto: only call put_page on
referenced and used pages")
Thanks a lot
Stephan
