sunrpc: use constant time memory comparison for mac

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commit 15a8b93fd5 upstream.

Otherwise, we enable a MAC forgery via timing attack.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: Jeff Layton <jlayton@poochiereds.net>
Cc: Trond Myklebust <trond.myklebust@primarydata.com>
Cc: Anna Schumaker <anna.schumaker@netapp.com>
Cc: linux-nfs@vger.kernel.org
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

...

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Jason A. Donenfeld 2017-06-10 04:59:07 +02:00 • committed by Ben Hutchings

parent 5ceaff45fb

commit 269bed5aa0

1 changed files with 2 additions and 1 deletions

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net/sunrpc/auth_gss/gss_krb5_crypto.c

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