crypto: qat - add param check for DH
authorGiovanni Cabiddu <giovanni.cabiddu@intel.com>
Mon, 9 May 2022 13:34:15 +0000 (14:34 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 29 Jul 2022 15:25:28 +0000 (17:25 +0200)
commite7f979ed51f96495328157df663c835b17db1e30
treed4b479441ecdb8378276627adefa58c5d1976ef5
parent4d6d2adce08788b7667a6e58002682ea1bbf6a79
crypto: qat - add param check for DH

[ Upstream commit 2acbb8771f6ac82422886e63832ee7a0f4b1635b ]

Reject requests with a source buffer that is bigger than the size of the
key. This is to prevent a possible integer underflow that might happen
when copying the source scatterlist into a linear buffer.

Cc: stable@vger.kernel.org
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Adam Guerin <adam.guerin@intel.com>
Reviewed-by: Wojciech Ziemba <wojciech.ziemba@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/crypto/qat/qat_common/qat_asym_algs.c