linux-kernel - [PATCH] crypto: include crypto- module prefix in template

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Message-ID: <20141124191742.GA13783@www.outflux.net>
Date:	Mon, 24 Nov 2014 11:17:42 -0800
From:	Kees Cook <keescook@...omium.org>
To:	Herbert Xu <herbert@...dor.apana.org.au>
Cc:	linux-kernel@...r.kernel.org, linux-crypto@...r.kernel.org,
	Mathias Krause <minipli@...glemail.com>
Subject: [PATCH] crypto: include crypto- module prefix in template

This adds the module loading prefix "crypto-" to the template lookup
as well.

For example, attempting to load 'vfat(blowfish)' via AF_ALG now correctly
includes the "crypto-" prefix at every level, correctly rejecting "vfat":

	net-pf-38
	algif-hash
	crypto-vfat(blowfish)
	crypto-vfat(blowfish)-all
	crypto-vfat

Reported-by: Mathias Krause <minipli@...glemail.com>
Signed-off-by: Kees Cook <keescook@...omium.org>
---
 crypto/algapi.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/crypto/algapi.c b/crypto/algapi.c
index e8d3a7dca8c4..71a8143e23b1 100644
--- a/crypto/algapi.c
+++ b/crypto/algapi.c
@@ -509,8 +509,8 @@ static struct crypto_template *__crypto_lookup_template(const char *name)
 
 struct crypto_template *crypto_lookup_template(const char *name)
 {
-	return try_then_request_module(__crypto_lookup_template(name), "%s",
-				       name);
+	return try_then_request_module(__crypto_lookup_template(name),
+				       "crypto-%s", name);
 }
 EXPORT_SYMBOL_GPL(crypto_lookup_template);
 
-- 
1.9.1


-- 
Kees Cook
Chrome OS Security
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