From 31e6ec4519c0fe0ee4a2f6ba3ab278e9506b9500 Mon Sep 17 00:00:00 2001 From: Artem Savkov Date: Wed, 26 Oct 2016 15:02:09 +0100 Subject: [PATCH] security/keys: make BIG_KEYS dependent on stdrng. 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. Fixes: 13100a72f40f5748a04017e0ab3df4cf27c809ef ('Security: Keys: Big keys stored encrypted') Signed-off-by: Artem Savkov Signed-off-by: David Howells cc: Stephan Mueller cc: Kirill Marinushkin cc: stable@vger.kernel.org Signed-off-by: James Morris --- security/keys/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/security/keys/Kconfig b/security/keys/Kconfig index f826e8739023..d942c7c2bc0a 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 -- 2.20.1