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Date: Wed, 8 Nov 2017 12:28:03 -0800 From: Eric Biggers <ebiggers3@...il.com> To: David Howells <dhowells@...hat.com> Cc: linux-crypto@...r.kernel.org, Herbert Xu <herbert@...dor.apana.org.au>, Tudor-Dan Ambarus <tudor.ambarus@...rochip.com>, Mat Martineau <mathew.j.martineau@...ux.intel.com>, Salvatore Benedetto <salvatore.benedetto@...el.com>, keyrings@...r.kernel.org, linux-kernel@...r.kernel.org, Eric Biggers <ebiggers@...gle.com>, stable@...r.kernel.org Subject: Re: [PATCH v2] lib/mpi: call cond_resched() from mpi_powm() loop On Wed, Nov 08, 2017 at 08:17:12PM +0000, David Howells wrote: > Eric Biggers <ebiggers3@...il.com> wrote: > > > This probably should be grouped with my series "crypto: dh - input validation > > fixes", as this is also a fix for Diffie-Hellman. I was actually expecting > > Herbert Xu to take these patches, as Diffie-Hellman is now part of the crypto > > API (crypto/dh.c); none of the patches actually touch security/keys/. > > Fine by me. > > > If you'd like to maintain the Diffie-Hellman implementation(s) you should > > get yourself added to MAINTAINERS for the relevant files. > > It touches the MPI lib, though, so it also potentially affects RSA and stuff, > which is why I introduced it to the kernel originally. > True, mpi_powm() might also be reachable by adding a key of type "asymmetric", in which case this fix would need to go to older kernels than v4.12. If I have a chance I'll see if I can find a reproducer. Eric
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