crypto: gcm - fix assumption that assoc has one segment
authorJussi Kivilinna <jussi.kivilinna@iki.fi>
Thu, 28 Mar 2013 19:54:03 +0000 (21:54 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 12 Apr 2013 16:38:46 +0000 (09:38 -0700)
commit972595ab7bfc0f84a7408732ccadbb7cca8a9661
tree4a2175e1b84118414605252571d1769efa580038
parenta227904b82c591bf9531b9deac1e60fbe96abfed
crypto: gcm - fix assumption that assoc has one segment

commit d3dde52209ab571e4e2ec26c66f85ad1355f7475 upstream.

rfc4543(gcm(*)) code for GMAC assumes that assoc scatterlist always contains
only one segment and only makes use of this first segment. However ipsec passes
assoc with three segments when using 'extended sequence number' thus in this
case rfc4543(gcm(*)) fails to function correctly. Patch fixes this issue.

Reported-by: Chaoxing Lin <Chaoxing.Lin@ultra-3eti.com>
Tested-by: Chaoxing Lin <Chaoxing.Lin@ultra-3eti.com>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
crypto/gcm.c