From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755398AbcIEMiK (ORCPT ); Mon, 5 Sep 2016 08:38:10 -0400 Received: from mx1.redhat.com ([209.132.183.28]:48992 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755263AbcIEMiI (ORCPT ); Mon, 5 Sep 2016 08:38:08 -0400 From: Artem Savkov To: paul.gortmaker@windriver.com Cc: dhowells@redhat.com, james.l.morris@oracle.com, keyrings@vger.kernel.org, linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org, Artem Savkov Subject: [PATCH] security/keys: make BIG_KEYS dependent on stdrng. Date: Mon, 5 Sep 2016 14:37:59 +0200 Message-Id: <1473079079-22465-1-git-send-email-asavkov@redhat.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.31]); Mon, 05 Sep 2016 12:38:07 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Since BIG_KEYS can't be compiled as module it requires one of the "stdrng" providers to be compiled into kernel. Otherwise big_key_crypto_init() fails on crypto_alloc_rng step and next dereference of big_key_skcipher (e.g. in big_key_preparse()) results in a NULL pointer dereference. Signed-off-by: Artem Savkov --- security/keys/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/security/keys/Kconfig b/security/keys/Kconfig index f826e87..d942c7c 100644 --- a/security/keys/Kconfig +++ b/security/keys/Kconfig @@ -41,7 +41,7 @@ config BIG_KEYS bool "Large payload keys" depends on KEYS depends on TMPFS - select CRYPTO + depends on (CRYPTO_ANSI_CPRNG = y || CRYPTO_DRBG = y) select CRYPTO_AES select CRYPTO_ECB select CRYPTO_RNG -- 2.7.4