On Sun, Dec 2, 2018 at 4:51 PM Sasha Levin sashal@kernel.org wrote:
This is a note to let you know that I've just added the patch titled
libceph: implement CEPHX_V2 calculation modeto the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: libceph-implement-cephx_v2-calculation-mode.patch and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
commit 14735e0afb6ed378becd0dedf37d1e5ddfa12084 Author: Ilya Dryomov idryomov@gmail.com Date: Fri Jul 27 19:25:32 2018 +0200
libceph: implement CEPHX_V2 calculation mode commit cc255c76c70f7a87d97939621eae04b600d9f4a1 upstream. Derive the signature from the entire buffer (both AES cipher blocks) instead of using just the first half of the first block, leaving out data_crc entirely. This addresses CVE-2018-1129. Link: http://tracker.ceph.com/issues/24837 Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Reviewed-by: Sage Weil <sage@redhat.com> Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk> Signed-off-by: Sasha Levin <sashal@kernel.org>
Hi Sasha,
The CVEs mentioned in this series are server side and CEPHX_V2 is probably more of a new feature than a security fix. That said, I don't object to including it in 4.14.z. If you do, please pick up the remaining two patches for interoperability:
f1d10e046379 libceph: weaken sizeof check in ceph_x_verify_authorizer_reply() 130f52f2b203 libceph: check authorizer reply/challenge length before reading
Thanks,
Ilya